Biological signal measurement system, biological signal measurement device, data analysis device, biological signal processing method, biological signal measurement program, and data analysis program

Abstract

A biological signal measurement system (1) is provided with a biological signal measurement device (10) and a data analysis device (20). A biological signal measurement device (10) is provided with a wireless communication unit (11) and a sensor (14) that measures a biological signal based on a response of a subject to a stimulus. A data analysis device (20) is provided with a data processing unit (24) that performs predetermined data processing on a biological signal, and a wireless communication unit (23) that performs data communication with a wireless communication unit (11). A data analysis device (20) is provided with a stimulation signal generation unit (21) that generates a stimulation signal for applying stimulation. A biological signal measurement device (10) is provided with: a trigger signal acquisition unit (13) that acquires a trigger signal corresponding to a stimulation signal; and a synchronous sampling unit (15) that synchronously samples the trigger signal and the biological signal. The wireless communication unit (23) transmits a stimulation signal to the wireless communication unit (11). The wireless communication unit (11) receives the stimulation signal from the wireless communication unit (23). A wireless communication unit (11) transmits a trigger signal and a biological signal obtained by synchronous sampling to a wireless communication unit (23). The wireless communication unit (23) receives the trigger signal and the biological signal from the wireless communication unit (11). The data processing unit (24) performs predetermined data processing on the basis of the received biosignal and trigger signal.

Description

Technical Field

[0001] This invention relates to a system for measuring biological signals of a subject using sensors worn by the subject. Background Technology

[0002] Patent Document 1 describes a biological signal measurement system. The biological signal measurement system of Patent Document 1 includes a biological signal measurement device and an information processing device. The biological signal measurement device and the information processing device communicate wirelessly.

[0003] The information processing device outputs a stimulus for measuring biological signals. The biological signal measuring device measures the biological signal corresponding to the stimulus and sends it to the information processing device.

[0004] The biosignal measuring device and the information processing device each have a timing generation unit. The biosignal measuring device and the information processing device achieve synchronization between the timing of the stimulus and the timing of wireless communication by processing the timing generated by their respective devices.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2021-183046 Summary of the Invention

[0008] The problem the invention aims to solve

[0009] However, the structure described in Patent Document 1 relies on the premise that the timing of the internal clock generated by the biosignal measuring device is consistent with the timing of the internal clock generated by the information processing device. If it is difficult to reliably synchronize the internal clocks of the biosignal measuring device and the information processing device, it may be impossible to reliably synchronize the stimulus signal and the biosignal for biosignal analysis, etc.

[0010] Therefore, the purpose of this invention is to provide a biological signal measurement system that can more reliably synchronize stimulus signals with biological signals.

[0011] Solution for solving the problem

[0012] The biosignal measurement system of the present invention includes a biosignal measurement device and a data analysis device. The biosignal measurement device includes a first wireless communication unit and a sensor for measuring biosignals based on a subject's response to a stimulus. The data analysis device includes a data processing unit for performing prescribed data processing on the biosignals and a second wireless communication unit that communicates with the first wireless communication unit. The data analysis device also includes a stimulus signal generation unit for generating a stimulus signal for applying a stimulus. The biosignal measurement device includes a trigger signal acquisition unit that acquires a trigger signal corresponding to the stimulus signal; and a synchronous sampling unit that synchronously samples the trigger signal and the biosignal. The second wireless communication unit sends the stimulus signal to the first wireless communication unit, and the first wireless communication unit receives the stimulus signal from the second wireless communication unit. The first wireless communication unit sends the trigger signal and the biosignal sampled by the synchronous sampling unit to the second wireless communication unit, and the second wireless communication unit receives the trigger signal and the biosignal from the first wireless communication unit. The data processing unit performs prescribed data processing based on the received biosignal and trigger signal.

[0013] In this structure, the trigger signal and the biological signal, which are synchronized with the stimulus signal, are sampled synchronously and sent as a signal pair to the data analysis device. Therefore, even if there is a delay in wireless communication between the biological signal measuring device and the data analysis device, the data analysis device can maintain synchronization in acquiring the trigger signal and the biological signal corresponding to the stimulus signal.

[0014] One embodiment of the present invention relates to a biosignal measurement system comprising a biosignal measurement device and a data analysis device. The biosignal measurement device comprises a microphone for collecting sounds emitted by a subject to generate a radio signal, a sensor for measuring the subject's biosignals in response to the sounds, and a first wireless communication unit. The data analysis device comprises a data processing unit for performing prescribed data processing on the biosignals and a second wireless communication unit for data communication with the first wireless communication unit. The biosignal measurement device comprises: a feature extraction unit for extracting feature quantities from the radio signal; a first trigger signal acquisition unit for acquiring a first trigger signal based on the feature quantities; and a synchronous sampling unit for synchronously sampling the first trigger signal and the biosignals. The first wireless communication unit transmits the first trigger signal and the biosignals sampled synchronously with the first trigger signal to the second wireless communication unit. The data processing unit of the data analysis device performs prescribed data processing based on the received biosignals and the first trigger signal.

[0015] In this structure, the trigger signal and biological signal based on the radio signal are sampled synchronously and sent as a signal pair to the data analysis device. Therefore, even if there is a delay in wireless communication between the biological signal measuring device and the data analysis device, the data analysis device can maintain synchronization in acquiring the trigger signal and biological signal corresponding to the radio signal.

[0016] One embodiment of the present invention relates to a biosignal measuring device comprising a trigger signal acquisition unit, a sensor, a synchronous sampling unit, and a wireless communication unit. The trigger signal acquisition unit acquires a trigger signal corresponding to a stimulus signal from an external source. The sensor measures a biosignal based on the subject's response to the stimulus signal. The synchronous sampling unit samples the trigger signal and the biosignal synchronously. The wireless communication unit transmits and receives data with a data parsing device. The wireless communication unit receives the trigger signal from the data parsing device and transmits it to the trigger signal acquisition unit; the wireless communication unit also transmits the trigger signal and biosignal sampled by the synchronous sampling unit to the data parsing device.

[0017] In this structure, the trigger signal corresponding to the stimulus signal and the biological signal are sampled synchronously and sent as a signal pair to a data analysis device that uses these signals for data analysis. Therefore, even if there is a delay in wireless communication between the biological signal measuring device and the data analysis device, the data analysis device can maintain synchronization in acquiring the trigger signal and the biological signal corresponding to the stimulus signal.

[0018] One embodiment of the present invention relates to a biosignal measuring device comprising a microphone, a sensor, a feature extraction unit, a trigger signal acquisition unit, a synchronous sampling unit, and a wireless communication unit. The microphone collects sound emitted by a subject to generate a sound signal. The sensor measures the subject's biosignals in response to the sound. The feature extraction unit extracts feature quantities from the sound signal. The trigger signal acquisition unit acquires a trigger signal based on the feature quantities. The synchronous sampling unit samples the trigger signal and the biosignal synchronously. The wireless communication unit transmits the trigger signal and the biosignal sampled synchronously with the trigger signal to a data parsing device.

[0019] In this structure, trigger signals based on radio signals and biological signals are sampled synchronously and sent as signal pairs to a data analysis device that uses these signals for data analysis. Therefore, even if there is a delay in wireless communication between the biological signal measuring device and the data analysis device, the data analysis device can maintain synchronization in acquiring the trigger signals and biological signals corresponding to the radio signals.

[0020] One embodiment of the present invention includes a data analysis apparatus comprising a stimulus signal generation unit, a wireless communication unit, and a data processing unit. The stimulus signal generation unit generates a stimulus signal for applying a stimulus. The wireless communication unit receives a biological signal based on a subject's response to a stimulus and a trigger signal corresponding to the stimulus signal, sampled synchronously with the biological signal. The data processing unit performs prescribed data processing related to the biological response corresponding to the biological signal based on the received biological signal and the trigger signal.

[0021] In this structure, trigger signals corresponding to stimulus signals and biological signals are received and sampled synchronously. Therefore, data processing can be performed using the synchronized stimulus signals and biological signals.

[0022] The effects of the invention

[0023] According to the present invention, even if a communication delay occurs between the device that generates the stimulus signal and the device that acquires the biological signal, the synchronization of the stimulus signal and the biological signal can be reliably achieved. Attached Figure Description

[0024] Figure 1 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to the first embodiment of the present invention.

[0025] Figure 2 This is a graph showing the relationship between the signals of the biological signal measurement system according to the first embodiment of the present invention on the time axis.

[0026] Figure 3 (A) Figure 3 (B) is a diagram illustrating an example of synchronized sampling of trigger signals and brainwave signals.

[0027] Figure 4 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to a second embodiment of the present invention.

[0028] Figure 5 This is a graph showing the relationship between the signals of the biological signal measurement system according to the second embodiment of the present invention on the time axis.

[0029] Figure 6 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to a third embodiment of the present invention.

[0030] Figure 7 This is a graph showing the relationship between the signals of the biological signal measurement system according to the third embodiment of the present invention on the time axis.

[0031] Figure 8This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to the fourth embodiment of the present invention.

[0032] Figure 9 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to the fifth embodiment of the present invention.

[0033] Figure 10 This is a graph showing the relationship between the signals of the biological signal measurement system according to the fifth embodiment of the present invention on the time axis.

[0034] Figure 11 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to the sixth embodiment of the present invention.

[0035] Figure 12 This is a graph showing the relationship between the signals of the biological signal measurement system according to the sixth embodiment of the present invention on the time axis.

[0036] Figure 13 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to the seventh embodiment of the present invention.

[0037] Figure 14 This is a graph showing the relationship between the signals of the biological signal measurement system according to the seventh embodiment of the present invention on the time axis.

[0038] Figure 15 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to the eighth embodiment of the present invention.

[0039] Figure 16 This is a graph showing the relationship between the signals of the biological signal measurement system according to the eighth embodiment of the present invention on the time axis.

[0040] Figure 17 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to the ninth embodiment of the present invention.

[0041] Figure 18 This is a graph showing the relationship between the signals of the biological signal measurement system according to the ninth embodiment of the present invention on the time axis.

[0042] Figure 19 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to the tenth embodiment of the present invention. Detailed Implementation

[0043] [First Implementation Method]

[0044] The biological signal measurement system according to the first embodiment of the present invention will be described with reference to the accompanying drawings. Figure 1 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to the first embodiment of the present invention. Figure 2 This is a graph showing the relationship between the signals of the biological signal measurement system according to the first embodiment of the present invention on the time axis.

[0045] like Figure 1 As shown, the biosignal measurement system 1 includes a biosignal measurement device 10 and a data analysis device 20. The biosignal measurement system 1 is a system for measuring the brainwave signals of a subject in response to auditory stimuli.

[0046] (Structure of the biological signal measuring device 10)

[0047] The biosignal measuring device 10 includes a wireless communication unit 11, an audio signal generation unit 12, a trigger signal acquisition unit 13, a sensor 14, a synchronization sampling unit 15, an antenna ANT1, a speaker SP1, and a speaker SP2. The biosignal measuring device 10 is, for example, a device of a size suitable for wear by a subject (a portable device). Specifically, the biosignal measuring device 10 is, for example, a headset, earphones, a wearable device, or a processing device with an externally connected sensor 14. The wireless communication unit 11 corresponds to the "first wireless communication unit" of this invention.

[0048] The wireless communication unit 11, the audio signal generation unit 12, and the synchronization sampling unit 15 are implemented, for example, by electronic circuitry. The speakers SP1 and SP2 are, for example, speakers of a headset, with speaker SP1 used for the R channel and speaker SP2 used for the L channel.

[0049] Antenna ANT1 is connected to wireless communication unit 11. Wireless communication unit 11 is connected to audio signal generation unit 12 and synchronous sampling unit 15.

[0050] Speakers SP1 and SP2 are connected to the audio signal generation unit 12. The connection line between the audio signal generation unit 12 and the speaker SP2 is branched and connected to the synchronization sampling unit 15. The branched portion of the connection line between the audio signal generation unit 12 and the speaker SP2 corresponds to the trigger signal acquisition unit 13.

[0051] Sensor 14 is connected to synchronous sampling unit 15.

[0052] (Structure of data parsing device 20)

[0053] The data analysis device 20 includes a stimulus signal generation unit 21, a trigger signal generation unit 22, a wireless communication unit 23, a data processing unit 24, and an antenna ANT2. The stimulus signal generation unit 21, the trigger signal generation unit, the wireless communication unit 23, and the data processing unit 24 are implemented using electronic circuits, a PC (personal computer), or other computing devices. Specifically, the data analysis device 20 is, for example, a tablet terminal or a smartphone. The wireless communication unit 23 corresponds to the "second wireless communication unit" of this invention.

[0054] Antenna ANT2 is connected to wireless communication unit 23. Wireless communication unit 23 is connected to stimulation signal generation unit 21, trigger signal generation unit 22, and data processing unit 24.

[0055] (Specific processing of biological signal measurement systems)

[0056] The stimulation signal generation unit 21 generates a stimulation signal (auditory stimulation signal S20t) for applying stimulation (auditory stimulation) to the subject to undergo brainwave measurement. The stimulation signal generation unit 21 outputs the auditory stimulation signal S20t to the wireless communication unit 23.

[0057] The trigger signal generation unit 22 generates a trigger signal St20t that repeats a pulse waveform at a predetermined period. The trigger signal St20t corresponds to the "first pulse signal" of the present invention. The trigger signal St20t is synchronized (time-synchronized) with the auditory stimulation signal S20t. The trigger signal generation unit 22 outputs the trigger signal St20t to the wireless communication unit 23.

[0058] The wireless communication unit 23 converts the auditory stimulus signal S20t and the trigger signal St20t into a data form for wireless communication and transmits it from the antenna ANT2. The wireless communication unit 11 receives the auditory stimulus signal S20t and the trigger signal St20t received by the antenna ANT1. That is, the wireless communication unit 23 and the wireless communication unit 11 can communicate data, and the wireless communication unit 23 can transmit and receive the auditory stimulus signal S20t and the trigger signal St20t between the wireless communication unit 23 and the wireless communication unit 11.

[0059] The wireless communication unit 11 converts the data into a data format for sound production and outputs it to the audio signal generation unit 12.

[0060] The audio signal generation unit 12 demodulates the auditory stimulus signal S20t to generate an auditory stimulus signal S10 as an analog signal. The audio signal generation unit 12 also demodulates the trigger signal St20t to generate a trigger signal St10 as an analog signal.

[0061] The audio signal generation unit 12 outputs an auditory stimulus signal S10, which is an analog signal, to the speaker SP1. It also outputs a trigger signal St10, which is an analog signal, to the speaker SP2. At this time, the audio signal generation unit 12 synchronously outputs the auditory stimulus signal S10 and the trigger signal St10.

[0062] The trigger signal St10 output from the audio signal generation unit 12 is allocated by the trigger signal acquisition unit 13 and input to the synchronization sampling unit 15. That is, the trigger signal acquisition unit 13 has the function of acquiring the trigger signal St10 output from the audio signal generation unit 12 and outputting it to the synchronization sampling unit 15.

[0063] Sensor 14 includes electrodes 141 and 142, and amplifier 143. Electrodes 141 and 142 are worn on the subject's head (brainwave measurement site). Electrodes 141 and 142 detect brainwave signal Se10 and output it to amplifier 143. Amplifier 143 amplifies the brainwave signal Se10 and outputs it to synchronous sampling unit 15.

[0064] Furthermore, the brainwave signal Se10 (biological signal) measured by sensor 14 is a signal based on the subject's response to auditory stimuli (stimulus) emitted from speaker SP1. In other words, the brainwave signal Se10 detected by sensor 14 is a signal that is continuously measured in time and contains the corresponding waveform when the subject responds to the auditory stimulus.

[0065] The synchronous sampling unit 15 includes sampler 151 and sampler 152. Sampler 151 and sampler 152 perform AD sampling. AD sampling refers to sampling an analog signal as a digital signal.

[0066] Sampler 151 digitally samples the trigger signal St10. Sampler 152 digitally samples the brainwave signal Se10.

[0067] Sampler 151 and sampler 152 sample synchronously. That is, the trigger signal St10 sampled by sampler 151 and the brainwave signal Se10 sampled by sampler 152 are synchronized.

[0068] Figure 3 (A) Figure 3 (B) is a diagram illustrating an example of synchronized sampling of trigger signals and brainwave signals.

[0069] exist Figure 3 In (A), the sampling period τa of the trigger signal St10 is the same as the sampling period τe of the brainwave signal Se10. Figure 3 In the case shown in (A), the sampling timing of the trigger signal St10 is consistent with the sampling timing of the brainwave signal Se10.

[0070] exist Figure 3 In (B), the sampling period τax of the trigger signal St10 is twice the sampling period τe of the brainwave signal Se10. Figure 3 In case (B), the sampling timing of the trigger signal St10 coincides with one of the two sampling timings of the brainwave signal Se10. Thus, synchronous sampling means that the brainwave signal Se10 is sampled at the same time as the trigger signal St10. Furthermore, the sampling period of the trigger signal St10 can be more than three times the sampling period τe of the brainwave signal Se10, but the larger the multiple, the greater the synchronization error; therefore, the same multiple or twice the original value is preferred.

[0071] The synchronous sampling unit 15 outputs the trigger signal St10 and brainwave signal Se10 obtained by synchronous sampling to the wireless communication unit 11.

[0072] The wireless communication unit 11 converts the trigger signal St10 and brainwave signal Se10 obtained through synchronous sampling into a data form for wireless communication and transmits it from the antenna ANT1. The wireless communication unit 23 receives the trigger signal St10 and brainwave signal Se10 received by the antenna ANT2. That is, the wireless communication unit 11 and the wireless communication unit 23 transmit and receive the trigger signal St10 and brainwave signal Se10.

[0073] The wireless communication unit 23 converts the trigger signal St10 and the brainwave signal Se10 into a data form for computational processing to generate the trigger signal St20r and the brainwave signal Se20r. The wireless communication unit 23 outputs the trigger signal St20r and the brainwave signal Se20r to the data processing unit 24.

[0074] The data processing unit 24 performs prescribed data processing based on the trigger signal St20r and the brainwave signal Se20r. Prescribed data processing may include, for example, the detection of event-related potentials such as P300. Furthermore, the prescribed data processing can be any data processing that analyzes brainwaves generated in response to auditory stimulation, or it may be other processing methods.

[0075] In this structure, even if the data analysis device 20 and the biosignal measuring device 10 communicate via delayed wireless communication, the data processing unit 24 can acquire the trigger signal and brainwave signal based on auditory stimulation in a state of constant synchronization. Here, the data processing unit 24 grasps the temporal relationship between the auditory stimulation signal and the trigger signal. In other words, the data processing unit 24 grasps the auditory stimulation signal and the trigger signal in a synchronized state.

[0076] Therefore, the data processing unit 24 is able to achieve time synchronization between auditory stimulus signals and brainwave signals.

[0077] Specifically, for example, such as Figure 2 As shown, the data transmission from the data analysis device 20 to the biosignal measuring device 10 has a delay time DLY1. Furthermore, the data transmission from the biosignal measuring device 10 to the data analysis device 20 has a delay time DLY2. Therefore, there is a delay time (DLY1+DLY2) from the time the data analysis device 20 outputs the auditory stimulus signal until the acquisition of the brainwave signal Se20r.

[0078] Therefore, if synchronous sampling is not performed as in this embodiment, a time difference (delay time (DLY1+DLY2)) will occur between the timing of the output of the auditory stimulus signal in the data parsing device 20 and the timing of the acquisition of the brain wave signal Se20r.

[0079] However, the biological signal measurement system 1 of this embodiment achieves: synchronous sampling in the biological signal measurement device 10; synchronous transmission and reception of trigger signals and brainwave signals between the biological signal measurement device 10 and the data analysis device 20; and realignment of auditory stimulation signals and brainwave signals in the data analysis device 20.

[0080] Therefore, even if a delay occurs during data processing due to communication failure or processing time, the data processing unit 24 can achieve time synchronization by synchronizing the auditory stimulus signal and the brainwave signal with the trigger signal, respectively. Thus, the data processing unit 24 can accurately analyze the brainwaves generated in response to auditory stimuli. This is particularly effective when processing biological signals generated at specific intervals in response to stimuli, such as event-related potentials.

[0081] Furthermore, in various embodiments of the present invention, including this embodiment, brainwave signals have been described as an example of biological signals based on the subject's response to stimuli. However, biological signals can also be based on pulse signals, electrocardiogram signals, electromyogram signals, etc., depending on the contact position between the sensor 14 and the skin. In this case, the data processing unit 24 performs data processing to analyze the biological response corresponding to the type of each signal.

[0082] [Second Implementation]

[0083] The biological signal measurement system according to the second embodiment of the present invention will be described with reference to the accompanying drawings. Figure 4 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to a second embodiment of the present invention. Figure 5 This is a graph showing the relationship between the signals of the biological signal measurement system according to the second embodiment of the present invention on the time axis.

[0084] like Figure 4 , Figure 5 As shown, the difference between the biological signal measurement system 1A according to the second embodiment and the biological signal measurement system 1 according to the first embodiment is that the second embodiment includes a data analysis device 20A and uses the characteristic quantity of the auditory stimulus signal as a trigger signal. The other structures of the biological signal measurement system 1A are the same as those of the biological signal measurement system 1, and the description of the same parts is omitted.

[0085] The biological signal measurement system 1A includes a data analysis device 20A. The difference between the data analysis device 20A and the data analysis device 20 is that the data analysis device 20A includes a data processing unit 24A and a feature extraction unit 25.

[0086] The feature extraction unit 25 (first feature extraction unit) extracts feature quantities from the auditory stimulus signal S20t output from the stimulus signal generation unit 21. For example, the feature extraction unit 25 extracts the envelope of the auditory stimulus signal S20t to generate a trigger signal St20tA. The feature extraction unit 25 is, for example, composed of a full-wave rectifier and a low-pass filter. The feature extraction unit 25 outputs the trigger signal St20tA containing the feature quantities to the wireless communication unit 23. The trigger signal St20tA containing the feature quantities is a data set arranged in a time sequence.

[0087] The wireless communication unit 23 transmits the auditory stimulus signal S20t and the trigger signal St20tA containing the characteristic quantity to the wireless communication unit 11 of the biosignal measuring device 10 in a synchronized state.

[0088] The wireless communication unit 11 receives an auditory stimulus signal S20t and a trigger signal St20tA containing characteristic quantities. The synchronous sampling unit 15 synchronously samples the trigger signal St10A obtained by demodulating the trigger signal St20tA and the brainwave signal Se10. The wireless communication unit 11 transmits the synchronously sampled trigger signal St10A and brainwave signal Se10 to the wireless communication unit 23.

[0089] The wireless communication unit 23 receives the trigger signal St10A and the brainwave signal Se10, and demodulates them into the trigger signal St20rA and the brainwave signal Se20r. The data processing unit 24A performs prescribed data processing based on the trigger signal St20rA and the brainwave signal Se20r.

[0090] In this way, the biological signal measurement system 1A can achieve the same effect as the biological signal measurement system 1. Furthermore, since the biological signal measurement system 1A uses a characteristic quantity generated based on the auditory stimulus signal, it is not necessary to generate a separate trigger signal as a pulse signal.

[0091] Furthermore, by using the characteristic quantity, the following effects can be achieved: The frequency band of the auditory stimulus signal is higher than that of the brainwave signal. Therefore, if the sampling rate of the brainwave signal is made consistent with the sampling rate of the auditory stimulus signal, the sampling rate of the brainwave signal becomes excessively high for brainwave analysis, increasing data communication volume. On the other hand, if the characteristic quantity is, for example, the envelope of the auditory stimulus signal, then the characteristic quantity is a frequency band lower than that of the auditory stimulus signal. Therefore, by using the characteristic quantity, the biosignal measurement system 1 can perform brainwave analysis and can suppress the brainwave signal sampling rate to a low level. As a result, the biosignal measurement system 1 can suppress data communication volume between the biosignal measurement device 10 and the data analysis device 20A. This effect is particularly effective when data is transmitted from the biosignal measurement device 10 to the data analysis device 20A.

[0092] Furthermore, this embodiment illustrates a method of using the envelope of the auditory stimulus signal as a feature quantity. However, the feature quantity is not limited to the envelope; any feature quantity obtained based on the auditory stimulus signal is acceptable.

[0093] When the extraction of feature quantities takes no time, that is, when the trigger signal is not delayed relative to the auditory stimulus signal due to the extraction of feature quantities (without the time error range affected by the analysis of brain waves), the feature quantity extraction unit 25 can extract feature quantities from the auditory stimulus signal S20t output by the stimulus signal generation unit 21 to generate the trigger signal St20tA.

[0094] On the other hand, if the extraction of feature quantities takes time, i.e., the trigger signal is significantly delayed relative to the auditory stimulus signal due to the extraction of feature quantities (delay due to the influence of brainwave analysis), the feature quantity extraction unit 25 pre-extracts the feature quantities from the auditory stimulus signal S20t and stores them in advance as the trigger signal St20tA. Then, the feature quantity extraction unit 25 outputs the trigger signal St20tA synchronously with the output timing of the auditory stimulus signal S20t from the stimulus signal generation unit 21.

[0095] [Third Implementation Method]

[0096] The biological signal measurement system according to the third embodiment of the present invention will be described with reference to the accompanying drawings. Figure 6 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to a third embodiment of the present invention. Figure 7 This is a graph showing the relationship between the signals of the biological signal measurement system according to the third embodiment of the present invention on the time axis.

[0097] like Figure 6 , Figure 7As shown, the difference between the biological signal measurement system 1B according to the third embodiment and the biological signal measurement system 1A according to the second embodiment is that the third embodiment includes a biological signal measurement device 10B and a data analysis device 20B; and a pulse signal based on the characteristic quantity of the auditory stimulus signal is used as a trigger signal. The other structures of the biological signal measurement system 1B are the same as those of the biological signal measurement system 1A, and descriptions of the same parts are omitted.

[0098] The biological signal measurement system 1B includes a biological signal measurement device 10B and a data analysis device 20B.

[0099] The biological signal measuring device 10B differs from the data measuring device 20 in that it includes a trigger signal acquisition unit 13B. The data parsing device 20B differs from the data parsing device 20 in that it includes a data processing unit 24B.

[0100] The trigger signal acquisition unit 13B generates a second pulse signal of the pulse waveform obtained by binarizing the feature quantity according to whether it meets the specified conditions, and acquires the second pulse signal as the trigger signal St10B.

[0101] More specifically, the trigger signal acquisition unit 13B stores a threshold THp for generating a second pulse signal. The trigger signal acquisition unit 13B compares the level of the trigger signal St10B, which is a characteristic quantity output from the audio signal generation unit 12 to the speaker SP2, with the threshold THp.

[0102] The trigger signal acquisition unit 13B sets the period in the trigger signal St10B that is above the threshold THp to Hi level, and sets the period in the trigger signal St10B that is below the threshold THp to Low level, thereby generating a second pulse signal and acquiring it as the trigger signal St10BP.

[0103] The trigger signal acquisition unit 13B outputs the trigger signal St10BP, which serves as the second pulse signal, to the synchronous sampling unit 15.

[0104] The synchronous sampling unit 15 synchronously samples the trigger signal St10BP, which serves as the second pulse signal, and the brainwave signal Se10, and outputs them to the wireless communication unit 11. The wireless communication unit 11 then transmits the synchronously sampled trigger signal St10BP and brainwave signal Se10 to the wireless communication unit 23.

[0105] The wireless communication unit 23 receives the trigger signal St10BP and the brainwave signal Se10 as the second pulse signal and outputs them to the data processing unit 24B.

[0106] A trigger signal St10B, serving as a feature quantity, is input from the feature extraction unit 25 to the data processing unit 24B. The data processing unit 24B stores the same threshold THp as the trigger signal acquisition unit 13B. The data processing unit 24B compares the trigger signal St10B with the threshold THp to generate a second pulse signal for synchronization during analysis.

[0107] The data processing unit 24B synchronizes the second pulse signal used for synchronization during analysis with the trigger signal received from the biological signal measuring device 10B as the second pulse signal, thereby performing prescribed data processing after synchronizing the brainwave signal with the stimulation signal.

[0108] In this way, the biological signal measurement system 1B can achieve the same effect as the biological signal measurement system 1A. Furthermore, the trigger signal obtained after binarization is sent from the biological signal measurement device 10B to the data analysis device 20B. Therefore, the amount of data communication during transmission from the biological signal measurement device 10B to the data analysis device 20B can be reduced.

[0109] [Fourth Implementation Method]

[0110] The biological signal measurement system according to the fourth embodiment of the present invention will be described with reference to the accompanying drawings. Figure 8 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to the fourth embodiment of the present invention.

[0111] like Figure 8 As shown, the biological signal measurement system 1C according to the fourth embodiment differs from the biological signal measurement system 1 according to the first embodiment in that it includes a biological signal measurement device 10C. The other structures of the biological signal measurement system 1C are the same as those of the biological signal measurement system 1, and descriptions of identical parts are omitted. The biological signal measurement device 10C differs from the biological signal measurement device 10 according to the first embodiment in that it includes a switching circuit 19. The other structures of the biological signal measurement device 10C are the same as those of the biological signal measurement device 10, and descriptions of identical parts are omitted.

[0112] The switching circuit 19 includes switching elements SW1 and SW2. Switching element SW1 is connected between a first connecting line and a second connecting line, the first connecting line connecting the audio signal generating unit 12 to the speaker SP1 (first output unit), and the second connecting line connecting the audio signal generating unit 12 to the speaker SP2 (second output unit). Switching element SW2 is connected between the trigger signal acquisition unit 13 in the second connecting line and the node corresponding to switching element SW1.

[0113] The switching circuit 19 switches between a first connection mode and a second connection mode. The switching circuit 19 operates in the first connection mode during brainwave measurement and in the second connection mode during periods when brainwave measurement is not being performed.

[0114] In the first connection mode, the switching circuit 19 short-circuits the switching element SW1 and opens the switching element SW2. In this case, the switching circuit 19 transmits the auditory stimulus signal from the audio signal generation unit 12 to the speakers SP1 and SP2. Furthermore, the switching circuit 19 only outputs the trigger signal from the audio signal generation unit 12 to the synchronization sampling unit 15.

[0115] Therefore, it is also possible to apply auditory stimulation to people with hearing impairment in one ear. In addition, it can prevent the trigger signal from being output to the speaker SP2 as unwanted noise.

[0116] In the second connection method, the switching circuit 19 opens the switching element SW1 and short-circuits the switching element SW2. In this case, the switching circuit 19 transmits different auditory stimulus signals from the audio signal generation unit 12 to the speakers SP1 and SP2. Thus, for example, when playing music, two auditory stimulus signals can be output to the speakers SP1 and SP2 respectively, thereby enabling stereo playback in the same way as with ordinary headphones.

[0117] [Fifth Implementation Method]

[0118] The biological signal measurement system according to the fifth embodiment of the present invention will be described with reference to the accompanying drawings. Figure 9 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to the fifth embodiment of the present invention. Figure 10 This is a graph showing the relationship between the signals of the biological signal measurement system according to the fifth embodiment of the present invention on the time axis.

[0119] like Figure 9 , Figure 10 As shown, the biological signal measurement system 1D according to the fifth embodiment differs from the biological signal measurement system 1A according to the second embodiment in that it includes a biological signal measurement device 10D and a data analysis device 20D; and it extracts characteristic quantities of auditory stimulus signals using the biological signal measurement device 10D. The other structures of the biological signal measurement system 1D are the same as those of the biological signal measurement system 1A, and descriptions of identical parts are omitted.

[0120] The biological signal measurement system 1D includes a biological signal measurement device 10D and a data analysis device 20D.

[0121] The difference between the biological signal measuring device 10D and the biological signal measuring device 10 is that it has a feature quantity extraction unit 17 and a distribution circuit 170. The difference between the data analysis device 20D and the data analysis device 20A is that it has a stimulus signal generation unit 21D and a data processing unit 24D.

[0122] The stimulation signal generation unit 21D generates two-channel auditory stimulation signals S20tR and S20tL. The wireless communication unit 23 transmits the two-channel auditory stimulation signals S20tR and S20tL.

[0123] The wireless communication unit 11 receives the dual-channel auditory stimulus signals S20tR and S20tL, performs data format conversion to generate auditory stimulus signals S10R and S10L, and outputs them to the audio signal generation unit 12. The audio signal generation unit 12 outputs the auditory stimulus signal S10R to the speaker SP1 and the auditory stimulus signal S10L to the speaker SP2.

[0124] The feature extraction unit 17 (second feature extraction unit) acquires the auditory stimulus signal S10L via the distribution circuit 170. The feature extraction unit 17 extracts feature values ​​from the auditory stimulus signal S10L and generates a trigger signal St10D. The feature extraction unit 17 outputs the trigger signal St10D to the synchronization sampling unit 15. The distribution circuit 170 also serves to acquire the signal that becomes the trigger, and is an example of a trigger signal acquisition unit.

[0125] The synchronous sampling unit 15 synchronously samples the trigger signal St10D and the brainwave signal Se10, which are characteristic quantities, and outputs them to the wireless communication unit 11. The wireless communication unit 11 transmits the trigger signal St10D and the brainwave signal Se10, which are characteristic quantities obtained by synchronous sampling, to the wireless communication unit 23.

[0126] The wireless communication unit 23 converts the trigger signal St10D and the brainwave signal Se10, which are obtained by synchronous sampling as feature quantities, into data formats to generate the trigger signal St20rD and the brainwave signal Se20r, and outputs them to the data processing unit 24D.

[0127] An auditory stimulus signal S20tL is input to the data processing unit 24D. The data processing unit 24D extracts the feature quantities of the auditory stimulus signal S20tL and generates a signal equivalent to the trigger signal St20rD.

[0128] The data processing unit 24D performs prescribed data processing based on the trigger signal St20rD, the brainwave signal Se20r, and a signal equivalent to the trigger signal St20rD generated by the data processing unit 24D, which are received from the biological signal measuring device 10D.

[0129] In this way, the biosignal measurement system 1D can achieve the same effect as the biosignal measurement system 1. Furthermore, the biosignal measurement system 1D extracts feature quantities from a system different from the vocalization system within the biosignal measurement device 10D to generate a trigger signal. Therefore, the data analysis device 20D can also send data to the biosignal measurement device 10D without generating a trigger signal.

[0130] In this case, for example, a two-channel stereo sound signal can be used as an auditory stimulus signal. Therefore, the biosignal measuring device 10D can be used as a stereo music player while simultaneously measuring brainwave signals.

[0131] [Sixth Implementation Method]

[0132] The biological signal measurement system according to the sixth embodiment of the present invention will be described with reference to the accompanying drawings. Figure 11 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to the sixth embodiment of the present invention. Figure 12 This is a graph showing the relationship between the signals of the biological signal measurement system according to the sixth embodiment of the present invention on the time axis.

[0133] like Figure 11 , Figure 12 As shown, the biological signal measurement system 1E according to the sixth embodiment differs from the biological signal measurement system 1A according to the second embodiment in that it includes a data analysis device 20E and is capable of estimating the temporal relationship between auditory stimulus signals, characteristic quantities (trigger signals), and brainwave signals. The other structures of the biological signal measurement system 1E are the same as those of the biological signal measurement system 1A, and descriptions of identical parts are omitted.

[0134] The biological signal measurement system 1E includes a biological signal measurement device 10 and a data analysis device 20E. The data analysis device 20E differs from the data analysis device 20A in that it includes a data processing unit 24E.

[0135] The trigger signal St20rE and brainwave signal Se20r, which are characteristic quantities received from the biosignal measuring device 10, are input to the data processing unit 24E via the wireless communication unit 23. In addition, an auditory stimulus signal S20t is input to the data processing unit 24E from the stimulus signal generation unit 21.

[0136] The feature extraction unit 25 extracts the feature quantities of the auditory stimulus signal S20tL input from the stimulus signal generation unit 21 and generates a trigger signal St20tE. The trigger signal St20tE, which is a feature quantity generated by the feature extraction unit 25, is input to the data processing unit 24E.

[0137] The data processing unit 24E includes a delay time estimation unit. The delay time estimation unit estimates the delay time DLY12 of the trigger signal St20rE (the trigger signal received from the biosignal measuring device 10) as a characteristic quantity relative to the auditory stimulus signal S20t.

[0138] The data processing unit 24E synchronizes the auditory stimulation signal S20t with the brainwave signal Se20r based on the estimated delay time DLY12.

[0139] More specifically, the auditory stimulus signal S20t generated by the data analysis device 20E is synchronized with the trigger signal St20tE. The trigger signal St20rE from the biosignal measuring device 10E is a signal based on the trigger signal St20tE from the data analysis device 20E. Therefore, the data processing unit 24E can obtain the delay time DLY12 of the trigger signal St20rE relative to the trigger signal St20tE by comparing the waveforms of the trigger signal St20rE and the trigger signal St20tE. More specifically, the time difference that is considered to have the largest cross-correlation coefficient between the trigger signal St20tE and the trigger signal St20rE can be synchronized.

[0140] Furthermore, based on the fact that the trigger signal St20tE is synchronized with the auditory stimulus signal S20t, the data processing unit 24E is able to estimate the delay time DLY12 of the trigger signal St20rE relative to the auditory stimulus signal S20t.

[0141] Furthermore, since the trigger signal St20rE is synchronized with the brainwave signal Se20r, the data processing unit 24E can synchronize the auditory stimulation signal S20t with the brainwave signal Se20r based on the delay time DLY12.

[0142] Based on this structure, the data processing unit 24E can perform prescribed data processing while synchronizing the auditory stimulus signal S20t with the brainwave signal Se20r. Therefore, the biosignal measurement system 1E can more directly measure the brainwave signal in response to the stimulus.

[0143] [Seventh Implementation Method]

[0144] The biological signal measurement system according to the seventh embodiment of the present invention will be described with reference to the accompanying drawings. Figure 13 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to the seventh embodiment of the present invention. Figure 14 This is a graph showing the relationship between the signals of the biological signal measurement system according to the seventh embodiment of the present invention on the time axis.

[0145] like Figure 13 , Figure 14As shown, the difference between the biological signal measurement system 1F according to the seventh embodiment and the biological signal measurement system 1D according to the fifth embodiment is that the seventh embodiment includes a data analysis device 20F and is capable of estimating the temporal relationship between auditory stimulus signals, characteristic quantities (trigger signals), and brainwave signals. The other structures of the biological signal measurement system 1F are the same as those of the biological signal measurement system 1D, and descriptions of identical parts are omitted.

[0146] The biological signal measurement system 1F includes a biological signal measurement device 10F and a data analysis device 20F. The biological signal measurement device 10F has the same structure as the biological signal measurement device 10D.

[0147] The difference between the data parsing device 20F and the data parsing device 20D is that the latter has a data processing unit 24F and a feature extraction unit 25.

[0148] The feature extraction unit 25 extracts the feature quantities of the auditory stimulus signal S20tL generated by the stimulus signal generation unit 21 and generates a trigger signal St20F. The feature extraction unit 25 outputs the trigger signal St20F to the data processing unit 24F.

[0149] The trigger signal St20rF and brainwave signal Se20r, which are characteristic quantities received from the biosignal measuring device 10, are input to the data processing unit 24F via the wireless communication unit 23. In addition, an auditory stimulus signal S20tL is input to the data processing unit 24F from the stimulus signal generation unit 21, and the trigger signal St20F, which is a characteristic quantity, is input to the data processing unit 24F from the characteristic quantity extraction unit 25.

[0150] The data processing unit 24F includes a delay time estimation unit. The delay time estimation unit estimates the delay time DLY12 of the trigger signal St20rF (the trigger signal received from the biosignal measuring device 10F) as a characteristic quantity relative to the auditory stimulus signal S20tL.

[0151] The data processing unit 24F synchronizes the auditory stimulation signal S20tL with the brainwave signal Se20r based on the estimated delay time DLY12.

[0152] More specifically, the auditory stimulus signal S20tL generated by the data analysis device 20F is synchronized with the trigger signal St20F. The trigger signal St20rF from the biosignal measuring device 10F is a signal based on the auditory stimulus signal S20tL from the data analysis device 20F, and is based on the same original signal as the trigger signal St20F. Therefore, the data processing unit 24F can obtain the delay time DLY12 of the trigger signal St20rF relative to the trigger signal St20F by comparing the waveforms of the trigger signal St20rF and the trigger signal St20F.

[0153] Furthermore, based on the fact that the trigger signal St20F is synchronized with the auditory stimulus signal S20tL, the data processing unit 24F can estimate the delay time DLY12 of the trigger signal St20rF relative to the auditory stimulus signal S20tL.

[0154] Furthermore, since the trigger signal St20rF is synchronized with the brainwave signal Se20r, the data processing unit 24F can synchronize the auditory stimulation signal S20tL with the brainwave signal Se20r based on the delay time DLY12.

[0155] Based on this structure, the data processing unit 24F can perform prescribed data processing while synchronizing the auditory stimulus signal S20tL with the brainwave signal Se20r. Therefore, the biosignal measurement system 1F can more directly measure the brainwave signal in response to the stimulus.

[0156] Furthermore, the auditory stimulus signal S20tL and the auditory stimulus signal S20tR are, for example, paired signals used for stereo playback, and are synchronized. Therefore, the data processing unit 24F can perform prescribed data processing while synchronizing the auditory stimulus signal S20tR with the brainwave signal Se20r. Thus, for example, the biosignal measurement system 1F can more directly measure brainwave signals for stereo sound.

[0157] [Eighth Implementation Method]

[0158] The biological signal measurement system according to the eighth embodiment of the present invention will be described with reference to the accompanying drawings. Figure 15 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to the eighth embodiment of the present invention. Figure 16 This is a graph showing the relationship between the signals of the biological signal measurement system according to the eighth embodiment of the present invention on the time axis.

[0159] like Figure 15 , Figure 16 As shown, the difference between the biological signal measurement system 1G according to the eighth embodiment and the biological signal measurement system 1D according to the fifth embodiment is that the latter includes a biological signal measurement device 10G and a data analysis device 20G; the brainwave signal is synchronized with the radio signal. The other structures of the biological signal measurement system 1G are the same as those of the biological signal measurement system 1D, and descriptions of the same parts are omitted.

[0160] The 1G biological signal measurement system comprises a 10G biological signal measurement device and a 20G data analysis device.

[0161] The difference between the biological signal measuring device 10G and the biological signal measuring device 10D is that the latter includes a wireless communication unit 11G, an audio signal generation unit 12G, a synchronous sampling unit 15G, a radio signal acquisition unit 180, a feature extraction unit 18, and a microphone MIC.

[0162] The microphone MIC collects the subject's voice and generates a sound signal S10m. The microphone MIC outputs the sound signal S10m to the audio signal generation unit 12G.

[0163] The audio signal generation unit 12G performs AD conversion on the received audio signal S10m and outputs it to the wireless communication unit 11G. The wireless communication unit 11G transmits the received audio signal S10m to the wireless communication unit 23G of the data parsing device 20G via the antenna ANT1.

[0164] The radio signal acquisition unit 180 distributes the radio signal S10m output from the microphone MIC and outputs it to the feature extraction unit 18.

[0165] The feature extraction unit 18 extracts the feature quantities of the radio signal S10m and generates a trigger signal St10G. The feature extraction unit 18 outputs the trigger signal St10G to the synchronous sampling unit 15G.

[0166] The synchronous sampling unit 15G includes sampler 152 and sampler 153. Sampler 152 and sampler 153 perform AD sampling.

[0167] Sampler 152 digitally samples the brainwave signal Se10. Sampler 153 digitally samples the trigger signal St10G. Samplers 152 and 153 sample synchronously.

[0168] The synchronous sampling unit 15G outputs the trigger signal St10G and brainwave signal Se10 obtained from synchronous sampling to the wireless communication unit 11G.

[0169] The wireless communication unit 11G transmits the trigger signal St10G and the brainwave signal Se10 obtained from synchronous sampling to the wireless communication unit 23G.

[0170] The difference between the data parsing device 20G and the data parsing device 20D is that the latter includes a wireless communication unit 23G, a data processing unit 24G, and a radio signal acquisition unit 26.

[0171] The wireless communication unit 23G receives the radio signal S10m from the wireless communication unit 11G and outputs it to the radio signal acquisition unit 26. In addition, the wireless communication unit 23G converts the data format of the trigger signal St10G and the brainwave signal Se10 received from the wireless communication unit 11G, and outputs them as the trigger signal St20rG and the brainwave signal Se20r to the data processing unit 24G.

[0172] The audio signal acquisition unit 26 performs prescribed processing on the audio signal S10m. For example, the audio signal acquisition unit 26 stores the audio signal S10m in a storage medium. Furthermore, for example, if the biosignal measuring device 10G is a headset equipped with a microphone (MIC) and speakers SP1 and SP2, and the data analysis device 20G is a PC (personal computer) capable of communication such as voice conferencing with other PCs, then the audio signal acquisition unit 26 converts the audio signal S10m into a format suitable for communication with other PCs and sends it to those PCs. Moreover, in this embodiment, the audio signal acquisition unit 26 does not directly affect the brainwave analysis processing, and therefore can be omitted.

[0173] The data processing unit 24G performs the prescribed data processing for brainwave measurement based on the synchronized trigger signal St20rG and brainwave signal Se20r.

[0174] Based on this structure, the Biosignal Measurement System 1G can measure the subject's brainwave signals in response to vocalization with high precision in sync with the vocalization.

[0175] Furthermore, this embodiment includes structures for applying auditory stimulation to the subject (stimulus signal generation unit 21, speaker SP1, speaker SP2, etc.), but these can also be omitted.

[0176] [Ninth Implementation Method]

[0177] The biological signal measurement system according to the ninth embodiment of the present invention will be described with reference to the accompanying drawings. Figure 17 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to the ninth embodiment of the present invention. Figure 18 This is a graph showing the relationship between the signals of the biological signal measurement system according to the ninth embodiment of the present invention on the time axis.

[0178] like Figure 17 , Figure 18 As shown, the difference between the biological signal measurement system 1H according to the ninth embodiment and the biological signal measurement system 1G according to the eighth embodiment is that the ninth embodiment includes a biological signal measurement device 10H and a data analysis device 20H; the radio signal received by the data analysis device 20H is synchronized with the brainwave signal. The other structures of the biological signal measurement system 1H are the same as those of the biological signal measurement system 1G, and the description of the same parts is omitted.

[0179] The biological signal measurement system 1H includes a biological signal measurement device 10H and a data analysis device 20H. The biological signal measurement device 10H has the same structure as the biological signal measurement device 10G, and the wireless communication unit 11H, audio signal generation unit 12H, synchronous sampling unit 15H, and feature extraction unit 18H are the same as those of the wireless communication unit 11G, audio signal generation unit 12G, synchronous sampling unit 15G, and feature extraction unit 18G, respectively.

[0180] The data parsing device 20H differs from the data parsing device 20G in that it includes a data processing unit 24H and a radio signal acquisition unit 26H. Furthermore, the wireless communication unit 23H of the data parsing device 20H is the same as the wireless communication unit 23G of the data parsing device 20G.

[0181] The radio signal acquisition unit 26H extracts the characteristic quantities of the radio signal S20mR obtained by converting the data format of the received radio signal S10m, and generates an observation device-side trigger signal St20rH that is synchronized with the brainwave signal Se20r. The radio signal acquisition unit 26H outputs the observation device-side trigger signal to the data processing unit 24H.

[0182] The data processing unit 24H includes a time relationship detection unit (first time relationship detection unit). The time relationship detection unit of the data processing unit 24H detects the time relationship between the trigger signal St20rH and the radio signal S20mR based on the trigger signal St20rH received from the biological signal measuring device 10H and the trigger signal on the observation device side.

[0183] More specifically, the trigger signal on the observation device side and the trigger signal St20rH are signals based on the characteristic quantities of the radio signal S10m. Therefore, the data processing unit 24H detects the time relationship between the trigger signal St20rH and the radio signal S20mR by comparing the waveforms of the trigger signal St20rH and the trigger signal on the observation device side.

[0184] Furthermore, the radio signal S20mR is synchronized with the trigger signal on the observation device side. Additionally, the brainwave signal Se20r is synchronized with the trigger signal St20rH.

[0185] Therefore, the data processing unit 24H can synchronize the radio signal S20mR with the brainwave signal Se20r based on the time relationship between the detected radio signal S20mR and the trigger signal St20rH.

[0186] Based on this structure, the data processing unit 24H can perform prescribed data processing while synchronizing the radio signal S20mR with the brainwave signal Se20r. Therefore, the biosignal measurement system 1H can more directly measure the subject's brainwave signals in response to vocalization.

[0187] [Tenth Implementation Method]

[0188] The biological signal measurement system according to the tenth embodiment of the present invention will be described with reference to the accompanying drawings. Figure 19 This is a functional block diagram illustrating an example of the structure of a biological signal measurement system according to the tenth embodiment of the present invention.

[0189] like Figure 19 As shown, the biological signal measurement system 1I according to the tenth embodiment differs from the biological signal measurement system 1H according to the ninth embodiment in that it includes a biological signal measurement device 10I and a data analysis device 20I; and it synchronizes the trigger signal of the auditory stimulus signal, the sound signal received by the data analysis device 20H, and the brainwave signal. The other structures of the biological signal measurement system 1I are the same as those of the biological signal measurement system 1H, and descriptions of the same parts are omitted.

[0190] The biological signal measurement system 1I includes a biological signal measurement device 10I and a data analysis device 20I.

[0191] The difference between the biosignal measuring device 10I and the biosignal measuring device 10H lies in the inclusion of a synchronous sampling unit 15I, a feature extraction unit 17, and a distribution circuit 170. The wireless communication unit 11I, the audio signal generation unit 12I, the synchronous sampling unit 15I, and the feature extraction unit 18I are the same as those of the wireless communication unit 11H, the audio signal generation unit 12H, and the feature extraction unit 18H, respectively. The feature extraction unit 17 and the distribution circuit 170 are the same as those of the biosignal measuring device 10D according to the fifth embodiment.

[0192] The synchronous sampling unit 15I includes sampler 151, sampler 152, and sampler 153. Sampler 151 performs AD sampling on trigger signals based on characteristic quantities of auditory stimulus signals. Sampler 152 performs AD sampling on brainwave signals. Sampler 153 performs AD sampling on trigger signals based on characteristic quantities of radio signals.

[0193] Samplers 151, 152, and 153 perform synchronous sampling. The synchronous sampling unit 15I outputs the trigger signal based on the characteristic quantity of the auditory stimulus signal, the trigger signal based on the characteristic quantity of the radio signal, and the brainwave signal obtained from the synchronous sampling to the wireless communication unit 11I.

[0194] The wireless communication unit 11I sends the trigger signal based on the characteristic quantity of the auditory stimulus signal, the trigger signal based on the characteristic quantity of the radio signal, and the brainwave signal obtained by synchronous sampling to the wireless communication unit 23I.

[0195] The data parsing device 20I differs from the data parsing device 20H in that it includes a data processing unit 24I and a feature extraction unit 25I. The wireless communication unit 23I and the radio signal acquisition unit 26I are the same as those of the wireless communication unit 23H and the radio signal acquisition unit 26H, respectively.

[0196] The feature extraction unit 25I is the same as the feature extraction unit 25 in the sixth embodiment.

[0197] The data processing unit 24I performs prescribed data processing based on the trigger signals of characteristic quantities of auditory stimulus signals, the trigger signals of characteristic quantities of radio signals, and brainwave signals obtained through synchronous sampling.

[0198] Therefore, the data processing unit 24I is able to analyze the brain waves generated by the subject in response to auditory stimuli and vocalizations with high precision.

[0199] Furthermore, by incorporating the aforementioned structure, the data processing unit 24I is capable of synchronously performing prescribed data processing on auditory stimulus signals, sound reception signals, and brainwave signals. Therefore, the data processing unit 24I can more directly analyze brainwaves in response to the subject's auditory stimuli and vocalizations, enabling more precise brainwave analysis.

[0200] <1> A biological signal measurement system, comprising:

[0201] A biosignal measuring device, comprising a first wireless communication unit and a sensor for measuring biosignals based on a subject's response to stimuli; and

[0202] The data analysis device includes a data processing unit that performs prescribed data processing on the biological signals and a second wireless communication unit that communicates with the first wireless communication unit.

[0203] The data parsing device includes a stimulus signal generation unit that generates a stimulus signal for applying the stimulus.

[0204] The biological signal measuring device includes:

[0205] A trigger signal acquisition unit acquires a trigger signal corresponding to the stimulus signal; and

[0206] A synchronous sampling unit that samples the trigger signal and the biological signal synchronously.

[0207] The second wireless communication unit sends the stimulation signal to the first wireless communication unit.

[0208] The first wireless communication unit receives the stimulation signal from the second wireless communication unit.

[0209] The first wireless communication unit sends the trigger signal and the biological signal sampled by the synchronization sampling unit to the second wireless communication unit.

[0210] The second wireless communication unit receives the trigger signal and the biological signal sampled by the synchronization sampling unit from the first wireless communication unit.

[0211] The data processing unit performs the prescribed data processing based on the received biological signals and the trigger signals.

[0212] <2> according to <1> The aforementioned biological signal measurement system, wherein,

[0213] The stimulation signal generation unit, together with the stimulation signal, generates a first pulse signal that is a pulse waveform that repeats at a predetermined period.

[0214] The second wireless communication unit transmits the first pulse signal and the stimulation signal together to the first wireless communication unit.

[0215] The trigger signal acquisition unit acquires the first pulse signal as the trigger signal.

[0216] <3> according to <1> The aforementioned biological signal measurement system, wherein,

[0217] The data analysis device includes a first feature extraction unit for extracting feature quantities of the stimulus signal.

[0218] The second wireless communication unit transmits the feature quantity along with the stimulation signal to the first wireless communication unit.

[0219] The trigger signal acquisition unit acquires the feature quantity as the trigger signal.

[0220] <4> according to <1> The aforementioned biological signal measurement system, wherein,

[0221] The data analysis device includes a first feature extraction unit for extracting feature quantities of the stimulus signal.

[0222] The second wireless communication unit transmits the feature quantity along with the stimulation signal to the first wireless communication unit.

[0223] The trigger signal acquisition unit generates a second pulse signal of the pulse waveform obtained by binarizing the feature quantities arranged in time sequence according to whether they meet the specified conditions, and acquires the second pulse signal as the trigger signal.

[0224] <5> according to <1> The aforementioned biological signal measurement system, wherein,

[0225] The data parsing device includes:

[0226] A first feature extraction unit extracts feature quantities of the stimulus signal; and

[0227] The trigger signal generation unit generates a second pulse signal obtained by binarizing the feature quantity according to whether it meets a predetermined condition, and uses the generated second pulse signal as the trigger signal.

[0228] The second wireless communication unit transmits the second pulse signal together with the stimulation signal to the first wireless communication unit.

[0229] The trigger signal acquisition unit acquires the second pulse signal as the trigger signal.

[0230] <6> according to <1> The aforementioned biological signal measurement system, wherein,

[0231] The biological signal measuring device includes a second feature extraction unit for extracting feature quantities of the stimulus signal.

[0232] The trigger signal acquisition unit acquires the feature quantity as the trigger signal.

[0233] <7> according to <1> The aforementioned biological signal measurement system, wherein,

[0234] The biological signal measuring device includes a second feature extraction unit for extracting feature quantities of the stimulus signal.

[0235] The trigger signal acquisition unit generates a second pulse signal of the pulse waveform obtained by binarizing the feature quantity according to whether it meets the specified conditions, and acquires the second pulse signal as the trigger signal.

[0236] <8> according to <3> to <7> The biological signal measurement system according to any one of the following, wherein,

[0237] The data parsing device includes a delay time estimation unit, which estimates the delay time between the stimulus signal and the feature quantity based on the time difference between the feature quantity transmitted from the second wireless communication unit to the first wireless communication unit and the feature quantity or the trigger signal received by the second wireless communication unit from the first wireless communication unit by the synchronization sampling unit.

[0238] <9> according to <1> to <8> The biological signal measurement system according to any one of the following, wherein,

[0239] The biological signal measuring device includes:

[0240] The first output unit and the second output unit are respectively connected to the first wireless communication unit; and

[0241] A switching circuit that switches the connection relationship between the first output unit and the second output unit and the first wireless communication unit.

[0242] The switching circuit switches between the first connection method and the second connection method.

[0243] In the first connection method, the stimulation signal is transmitted from the first wireless communication unit to the first output unit and the second output unit, and the trigger signal is transmitted from the first wireless communication unit to the synchronous sampling unit and the second output unit.

[0244] In the second connection method, different stimulation signals are transmitted from the first wireless communication unit to the first output unit and the second output unit.

[0245] <10> according to <1> to <9> The biological signal measurement system according to any one of the following, wherein,

[0246] The stimulus is an auditory stimulus.

[0247] The biological signal mentioned is a brainwave signal.

[0248] <11> A biological signal measurement system, comprising:

[0249] A biosignal measuring device comprising a microphone for collecting sounds emitted by a subject to generate a radio signal, a sensor for measuring biosignals of the subject in response to the sounds, and a first wireless communication unit; and

[0250] The data analysis device includes a data processing unit that performs prescribed data processing on the biological signals and a second wireless communication unit that communicates with the first wireless communication unit.

[0251] The biological signal measuring device includes:

[0252] The feature extraction unit extracts the feature quantities of the radio signal;

[0253] A first trigger signal acquisition unit acquires a first trigger signal based on the aforementioned feature quantity; and

[0254] The synchronous sampling unit samples the first trigger signal and the biological signal synchronously.

[0255] The first wireless communication unit sends the first trigger signal and the biological signal sampled synchronously with the first trigger signal to the second wireless communication unit.

[0256] The data processing unit of the data parsing device performs the prescribed data processing based on the received biological signal and the first trigger signal.

[0257] <12> according to <11> The aforementioned biological signal measurement system, wherein,

[0258] The first trigger signal acquisition unit acquires the feature quantity as the first trigger signal.

[0259] <13> according to <11> The aforementioned biological signal measurement system, wherein,

[0260] The first trigger signal acquisition unit generates a pulse signal of a pulse waveform obtained by binarizing the feature quantity according to whether it meets a specified condition, and acquires the pulse signal as the first trigger signal.

[0261] <14> according to <11> to <13> The biological signal measurement system according to any one of the following, wherein,

[0262] The first wireless communication unit of the biological signal measuring device transmits the received signal to the second wireless communication unit.

[0263] The data parsing device includes:

[0264] A first time relationship detection unit detects the time relationship between the radio signal and the first trigger signal; and

[0265] The synchronization processing unit synchronizes the radio signal with the biological signal based on the time relationship between the radio signal and the first trigger signal.

[0266] The data processing unit uses the synchronized radio signal and the biological signal to perform the prescribed data processing.

[0267] <15> according to <11> to <14> The biological signal measurement system according to any one of the following, wherein,

[0268] The data parsing device includes a stimulus signal generation unit that generates a stimulus signal for applying a stimulus.

[0269] The biological signal measuring device includes:

[0270] The second trigger signal acquisition unit acquires a second trigger signal corresponding to the stimulation signal; and

[0271] The synchronous sampling unit synchronously samples the first trigger signal, the second trigger signal, and the biological signal.

[0272] The second wireless communication unit sends the stimulation signal to the first wireless communication unit.

[0273] The first wireless communication unit sends the first trigger signal, the second trigger signal, and the biological signal obtained through synchronous sampling to the second wireless communication unit.

[0274] The data processing unit of the data parsing device uses the received biological signal, the first trigger signal, and the second trigger signal to perform the prescribed data processing.

[0275] <16> according to <15> The aforementioned biological signal measurement system, wherein,

[0276] The data parsing device includes:

[0277] A second time relationship detection unit detects the time relationship between the stimulus signal and the second trigger signal; and

[0278] The synchronization processing unit synchronizes the stimulus signal with the biological signal based on the time relationship between the stimulus signal and the second trigger signal.

[0279] The data processing unit uses the synchronized stimulus signal, the radio signal, and the biological signal to perform the prescribed data processing.

[0280] <17> according to <11> to <16> The biological signal measurement system according to any one of the following, wherein,

[0281] The biological signal mentioned is a brainwave signal.

[0282] <18> according to <15> or <16> The aforementioned biological signal measurement system, wherein,

[0283] The stimulus is an auditory stimulus.

[0284] The biological signal mentioned is a brainwave signal.

[0285] <19> A biological signal measuring device, comprising:

[0286] The trigger signal acquisition unit acquires the trigger signal corresponding to the stimulus signal from the outside;

[0287] A sensor that measures biological signals based on the subject's response to the stimulus signal;

[0288] A synchronous sampling unit that synchronously samples the trigger signal and the biological signal; and

[0289] The wireless communication unit, in conjunction with the data parsing device, transmits and receives data.

[0290] The wireless communication unit receives the trigger signal from the data parsing device and sends it to the trigger signal acquisition unit.

[0291] The wireless communication unit sends the trigger signal and the biological signal sampled by the synchronous sampling unit to the data parsing device.

[0292] <20> A biological signal measuring device, comprising:

[0293] A microphone, which collects the sounds emitted by the subject to generate a sound signal;

[0294] A sensor that measures the subject's biosignals in response to the sound;

[0295] The feature extraction unit extracts the feature quantities of the radio signal;

[0296] A trigger signal acquisition unit acquires a trigger signal based on the aforementioned feature quantity;

[0297] A synchronous sampling unit that synchronously samples the trigger signal and the biological signal; and

[0298] The wireless communication unit sends the trigger signal and the biological signal sampled synchronously with the trigger signal to the data parsing device.

[0299] <21> A data parsing device, comprising:

[0300] A stimulation signal generation unit that generates a stimulation signal for applying the stimulation;

[0301] A wireless communication unit receives a biological signal and a trigger signal, wherein the biological signal is a signal based on a subject's response to the stimulus, and the trigger signal is a signal corresponding to the stimulus signal, sampled synchronously with the biological signal; and

[0302] The data processing unit performs prescribed data processing related to the biological response corresponding to the received biological signal and the trigger signal.

[0303] <22> A method for processing biological signals, wherein a biological signal measuring device measures biological signals based on a subject's response to stimuli, and a data analysis device performs prescribed data processing on the biological signals.

[0304] The biological signal processing method includes:

[0305] The data parsing device generates a stimulation signal for applying the stimulation;

[0306] The stimulation signal is sent from the data analysis device to the biological signal measuring device;

[0307] The biological signal measuring device acquires a trigger signal corresponding to the received stimulus signal, and samples the trigger signal and the biological signal synchronously.

[0308] The biological signal measuring device sends the trigger signal and the biological signal obtained through synchronous sampling to the data parsing device; and

[0309] The data analysis device performs the prescribed data processing based on the received biological signals and the trigger signals.

[0310] <23> A method for processing biological signals, wherein a biological signal measuring device collects sounds emitted by a subject to generate a sound signal, measures the subject's biological signals in response to the sounds, and a data analysis device performs prescribed data processing on the biological signals.

[0311] The biological signal processing method includes:

[0312] The biosignal measuring device extracts the feature quantity of the radio signal, obtains a trigger signal based on the feature quantity, and samples the trigger signal and the biosignal synchronously.

[0313] The biological signal measuring device sends the trigger signal and the biological signal sampled synchronously with the trigger signal to the data parsing device; and

[0314] The data analysis device performs the prescribed data processing based on the received biological signals and the trigger signals.

[0315] <24> A biological signal measurement procedure causes a biological signal measurement device to perform the following processing:

[0316] Acquire trigger signals corresponding to external stimulus signals;

[0317] Measurement of biological signals based on the subject's response to the stimulus signal;

[0318] The trigger signal and the biological signal are sampled synchronously; and

[0319] Send the trigger signal and the biological signal obtained from synchronous sampling.

[0320] <25> A biological signal measurement procedure causes a biological signal measurement device to perform the following processing:

[0321] The sounds emitted by the subjects are collected to generate a radio signal;

[0322] Measure the biological signals in response to the sound;

[0323] Extract the feature quantities of the radio signal;

[0324] Obtain the trigger signal based on the aforementioned feature quantity;

[0325] The trigger signal and the biological signal are sampled synchronously; and

[0326] Send the trigger signal and the biological signal sampled synchronously with the trigger signal.

[0327] <26> A data parsing program that causes a data parsing device to perform the following processes:

[0328] Generate a stimulus signal for applying the stimulus;

[0329] Receive biological signals and trigger signals, wherein the biological signals are signals based on the subject's response to the stimulus, and the trigger signals are signals corresponding to the stimulus signals sampled synchronously with the biological signals; and

[0330] Based on the received biological signal and the trigger signal, prescribed data processing is performed related to the biological response corresponding to the biological signal.

[0331] Explanation of reference numerals in the attached figures

[0332] 1, 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I: Biosignal Measurement System

[0333] 10, 10B, 10C, 10D, 10E, 10F, 10G, 10H, 10I: Biosignal Measurement Device

[0334] 11, 11G, 11H, 11I: Wireless Communications Department

[0335] 12, 12G, 12H, 12I: Audio signal generation unit

[0336] 13, 13B: Trigger signal acquisition unit

[0337] 14: Sensors

[0338] 15, 15G, 15H, 15I: Synchronous Sampling Unit

[0339] 17, 18, 18H: Feature extraction section

[0340] 19: Switching circuit

[0341] 20, 20A, 20B, 20D, 20E, 20F, 20G, 20H, 20I: Data parsing devices

[0342] 21, 21D: Stimulus signal generation unit

[0343] 22: Trigger signal generation unit

[0344] 23, 23G, 23H, 23I: Wireless Communications Department

[0345] 24, 24A, 24B, 24D, 24E, 24F, 24G, 24H, 24I: Data Processing Department

[0346] 25, 25I: Feature Extraction Section

[0347] 26, 26H, 26I: Radio signal acquisition unit

[0348] 141, 142: Electrodes

[0349] 143: Amplifier

[0350] 151, 152, 153: Sampler

[0351] 170: Distribution Circuit

[0352] 180: Radio signal acquisition unit

[0353] ANT1, ANT2: Antennas

[0354] DLY1, DLY12, DLY2: Delay time

[0355] MIC: Microphone

[0356] S10, S10L, S10R: Auditory stimulus signals

[0357] S10m, S20mR: Radio signals

[0358] S20t, S20tL, S20tR: Auditory stimulus signals

[0359] Se10, Se20r: Brainwave signals

[0360] SP1, SP2: Speakers

[0361] St10, St10A, St10B, St10D, St10G, St20F, St20r, St20rA, St20rD, St20rE, St20rF, St20rG, St20rH, St20t, St20tA, St20tE: Trigger Signals

[0362] SW1, SW2: Switching elements

[0363] THp: Threshold

Claims

1. A biological signal detection system, comprising: A biosignal measuring device, comprising a first wireless communication unit and a sensor for measuring biosignals based on a subject's response to stimuli; and The data analysis device includes a data processing unit that performs prescribed data processing on the biological signals and a second wireless communication unit that communicates with the first wireless communication unit. in, The data parsing device includes a stimulus signal generation unit that generates a stimulus signal for applying the stimulus. The biological signal measuring device includes: A trigger signal acquisition unit acquires a trigger signal corresponding to the stimulus signal; and A synchronous sampling unit that samples the trigger signal and the biological signal synchronously. The second wireless communication unit sends the stimulation signal to the first wireless communication unit. The first wireless communication unit receives the stimulation signal from the second wireless communication unit. The first wireless communication unit sends the trigger signal and the biological signal sampled by the synchronization sampling unit to the second wireless communication unit. The second wireless communication unit receives the trigger signal and the biological signal from the first wireless communication unit. The data processing unit performs the prescribed data processing based on the received biological signals and the trigger signals.

2. The biological signal measurement system according to claim 1, wherein, The stimulation signal generation unit, together with the stimulation signal, generates a first pulse signal that is a pulse waveform that repeats at a predetermined period. The second wireless communication unit transmits the first pulse signal and the stimulation signal together to the first wireless communication unit. The trigger signal acquisition unit acquires the first pulse signal as the trigger signal.

3. The biological signal measurement system according to claim 1, wherein, The data analysis device includes a first feature extraction unit for extracting feature quantities of the stimulus signal. The second wireless communication unit transmits the feature quantity along with the stimulation signal to the first wireless communication unit. The trigger signal acquisition unit acquires the feature quantity as the trigger signal.

4. The biological signal measurement system according to claim 1, wherein, The data analysis device includes a first feature extraction unit for extracting feature quantities of the stimulus signal. The second wireless communication unit transmits the feature quantity along with the stimulation signal to the first wireless communication unit. The trigger signal acquisition unit generates a second pulse signal of the pulse waveform obtained by binarizing the feature quantities arranged in time sequence according to whether they meet the specified conditions, and acquires the second pulse signal as the trigger signal.

5. The biological signal measurement system according to claim 1, wherein, The data parsing device includes: A first feature extraction unit extracts feature quantities of the stimulus signal; and The trigger signal generation unit binarizes the feature quantities arranged in a time sequence according to whether they meet predetermined conditions, thereby generating a second pulse signal of a pulse waveform, and uses the generated second pulse signal as the trigger signal. The second wireless communication unit transmits the second pulse signal together with the stimulation signal to the first wireless communication unit. The trigger signal acquisition unit acquires the second pulse signal as the trigger signal.

6. The biological signal measurement system according to claim 1, wherein, The biological signal measuring device includes a second feature extraction unit for extracting feature quantities of the stimulus signal. The trigger signal acquisition unit acquires the feature quantity as the trigger signal.

7. The biological signal measurement system according to claim 1, wherein, The biological signal measuring device includes a second feature extraction unit for extracting feature quantities of the stimulus signal. The trigger signal acquisition unit generates a second pulse signal of the pulse waveform obtained by binarizing the feature quantity according to whether it meets the specified conditions, and acquires the second pulse signal as the trigger signal.

8. The biological signal measurement system according to any one of claims 3 to 7, wherein, The data parsing device includes a delay time estimation unit, which estimates the delay time between the stimulus signal and the feature quantity based on the time difference between the feature quantity transmitted from the second wireless communication unit to the first wireless communication unit and the feature quantity or the trigger signal received by the second wireless communication unit from the first wireless communication unit by the synchronization sampling unit.

9. The biological signal measurement system according to any one of claims 1 to 8, wherein, The biological signal measuring device includes: The first output unit and the second output unit are respectively connected to the first wireless communication unit; and A switching circuit that switches the connection relationship between the first output unit and the second output unit and the first wireless communication unit. The switching circuit switches between the first connection method and the second connection method. In the first connection method, the stimulation signal is transmitted from the first wireless communication unit to the first output unit and the second output unit, and the trigger signal is transmitted from the first wireless communication unit to the synchronous sampling unit. In the second connection method, different stimulation signals are transmitted from the first wireless communication unit to the first output unit and the second output unit.

10. The biological signal measurement system according to any one of claims 1 to 9, wherein, The stimulus is an auditory stimulus. The biological signal mentioned is a brainwave signal.

11. A biological signal measurement system, comprising: A biosignal measuring device comprising a microphone for collecting sounds emitted by a subject to generate a radio signal, a sensor for measuring biosignals of the subject in response to the sounds, and a first wireless communication unit; and The data analysis device includes a data processing unit that performs prescribed data processing on the biological signals and a second wireless communication unit that communicates with the first wireless communication unit. in, The biological signal measuring device includes: The feature extraction unit extracts the feature quantities of the radio signal; A first trigger signal acquisition unit acquires a first trigger signal based on the aforementioned feature quantity; and The synchronous sampling unit samples the first trigger signal and the biological signal synchronously. The first wireless communication unit sends the first trigger signal and the biological signal sampled synchronously with the first trigger signal to the second wireless communication unit. The data processing unit of the data parsing device performs the prescribed data processing based on the received biological signal and the first trigger signal.

12. The biological signal measurement system according to claim 11, wherein, The first trigger signal acquisition unit acquires the feature quantity as the first trigger signal.

13. The biological signal measurement system according to claim 11, wherein, The first trigger signal acquisition unit generates a pulse signal of a pulse waveform obtained by binarizing the feature quantity according to whether it meets a specified condition, and acquires the pulse signal as the first trigger signal.

14. The biological signal measurement system according to any one of claims 11 to 13, wherein, The first wireless communication unit of the biological signal measuring device transmits the received signal to the second wireless communication unit. The data parsing device includes: A first time relationship detection unit detects the time relationship between the radio signal and the first trigger signal; and The synchronization processing unit synchronizes the radio signal with the biological signal based on the time relationship between the radio signal and the first trigger signal. The data processing unit uses the synchronized radio signal and the biological signal to perform the prescribed data processing.

15. The biological signal measurement system according to any one of claims 11 to 14, wherein, The data parsing device includes a stimulus signal generation unit that generates a stimulus signal for applying a stimulus. The biological signal measuring device includes: The second trigger signal acquisition unit acquires a second trigger signal corresponding to the stimulation signal; and The synchronous sampling unit synchronously samples the first trigger signal, the second trigger signal, and the biological signal. The second wireless communication unit sends the stimulation signal to the first wireless communication unit. The first wireless communication unit sends the first trigger signal, the second trigger signal, and the biological signal obtained through synchronous sampling to the second wireless communication unit. The data processing unit of the data parsing device uses the received biological signal, the first trigger signal, and the second trigger signal to perform the prescribed data processing.

16. The biological signal measurement system according to claim 15, wherein, The data parsing device includes: A second time relationship detection unit detects the time relationship between the stimulus signal and the second trigger signal; and The synchronization processing unit synchronizes the stimulus signal with the biological signal based on the time relationship between the stimulus signal and the second trigger signal. The data processing unit uses the synchronized stimulus signal, the radio signal, and the biological signal to perform the prescribed data processing.

17. The biological signal measurement system according to any one of claims 11 to 16, wherein, The biological signal mentioned is a brainwave signal.

18. The biological signal measurement system according to claim 15 or 16, wherein, The stimulus is an auditory stimulus. The biological signal mentioned is a brainwave signal.

19. A biological signal measuring device, comprising: The trigger signal acquisition unit acquires the trigger signal corresponding to the stimulus signal from the outside; A sensor that measures biological signals based on the subject's response to the stimulus signal; A synchronous sampling unit that synchronously samples the trigger signal and the biological signal; and The wireless communication unit, in conjunction with the data parsing device, transmits and receives data. in, The wireless communication unit receives the trigger signal from the data parsing device and sends it to the trigger signal acquisition unit. The wireless communication unit sends the trigger signal and the biological signal sampled by the synchronous sampling unit to the data parsing device.

20. A biological signal measuring device, comprising: A microphone, which collects the sounds emitted by the subject to generate a sound signal; A sensor that measures the subject's biosignals in response to the sound; The feature extraction unit extracts the feature quantities of the radio signal; A trigger signal acquisition unit acquires a trigger signal based on the aforementioned feature quantity; A synchronous sampling unit that samples the trigger signal and the biological signal synchronously; as well as The wireless communication unit sends the trigger signal and the biological signal sampled synchronously with the trigger signal to the data parsing device.

21. A data parsing device, comprising: The stimulation signal generation unit generates stimulation signals for applying stimulation; The wireless communication unit receives biological signals and trigger signals, wherein... The biological signal is a signal based on the subject's response to the stimulus, and the trigger signal is a signal corresponding to the stimulus signal that is sampled synchronously with the biological signal; as well as The data processing unit performs prescribed data processing related to the biological response corresponding to the received biological signal and the trigger signal.

22. A biological signal processing method, wherein, A biosignal measuring device measures biosignals based on a subject's response to stimuli, and a data analysis device performs prescribed data processing on the biosignals. The biological signal processing method includes: The data parsing device generates a stimulation signal for applying the stimulation; The stimulation signal is sent from the data analysis device to the biological signal measuring device; The biological signal measuring device acquires a trigger signal corresponding to the received stimulus signal, and samples the trigger signal and the biological signal synchronously. The biological signal measuring device sends the trigger signal and the biological signal obtained through synchronous sampling to the data parsing device; and The data analysis device performs the prescribed data processing based on the received biological signals and the trigger signals.

23. A biological signal processing method, wherein, A biosignal measuring device collects the sounds emitted by a subject to generate a sound signal, measures the subject's biosignals in response to the sound, and a data analysis device performs prescribed data processing on the biosignals. The biological signal processing method includes: The biosignal measuring device extracts the feature quantity of the radio signal, obtains a trigger signal based on the feature quantity, and samples the trigger signal and the biosignal synchronously. The biological signal measuring device sends the trigger signal and the biological signal sampled synchronously with the trigger signal to the data parsing device; and The data analysis device performs the prescribed data processing based on the received biological signals and the trigger signals.

24. A biological signal measurement program that causes a biological signal measurement device to perform the following processing: Acquire trigger signals corresponding to external stimulus signals; Measurement of biological signals based on the subject's response to the stimulus signal; The trigger signal and the biological signal are sampled synchronously; and Send the trigger signal and the biological signal obtained from synchronous sampling.

25. A biological signal measurement program that causes a biological signal measurement device to perform the following processing: The sounds emitted by the subjects are collected to generate a radio signal; Measure the biological signals in response to the sound; Extract the feature quantities of the radio signal; Obtain the trigger signal based on the aforementioned feature quantity; The trigger signal and the biological signal are sampled synchronously; as well as Send the trigger signal and the biological signal sampled synchronously with the trigger signal.

26. A data parsing program that causes a data parsing device to perform the following processes: Generate stimulation signals for applying stimulation; Receives biological signals and trigger signals, among which, The biological signal is a signal based on the subject's response to the stimulus, and the trigger signal is a signal corresponding to the stimulus signal that is sampled synchronously with the biological signal; as well as Based on the received biological signal and the trigger signal, prescribed data processing is performed related to the biological response corresponding to the biological signal.

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