Brain function measurement system and brain function measurement method

Abstract

This brain function measurement system (100) comprises: a signal measurement unit (11) for measuring a signal (4) which is based on the blood flow of a brain; a measurement result acquisition unit (10a) for acquiring a measurement result (40); and a server (2) including an index data generation unit (20a) which generates index data (41) that is a brain function index, a storage unit (21) which associates and stores the measurement result, the index data, and identification information (42) that identifies a subject (90), and a data transmission unit (22) which transmits the identified index data to a terminal (3) that is operated by the subject.

Description

Technical Field

[0001] The present invention relates to a brain function measurement system and a brain function measurement method.

Background Art

[0002] Conventionally, a brain function measurement system and a brain function measurement method have been known. Such a brain function measurement method is disclosed, for example, in Japanese Patent No. 6475132.

[0003] Japanese Patent No. 6475132 discloses a brain function index output device including a measurement unit, an arithmetic unit, a task unit, and a display unit. In this brain function index output device, a subject is configured to execute a task selected by a doctor or the like and presented from the task unit. Further, the brain function index output device disclosed in Japanese Patent No. 6475132 is configured to display an index of the brain function of the subject and treatment information of the subject on the display unit. Thereby, a doctor can perform diagnosis of the subject and confirmation of the treatment effect.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Here, although not specified in Japanese Patent No. 6475132, there is a demand for the subject being examined to confirm whether the brain function has been improved by treatment of the subject's brain function or training to improve the brain function. However, the brain function index output device (brain function measurement system) disclosed in Japanese Patent No. 6475132 is configured to display index data and the like for a doctor or the like to confirm changes in the index (index data) of the brain function caused by treatment or the like. That is, the brain function measurement system disclosed in Japanese Patent No. 6475132 is a system used only when a doctor makes a diagnosis or the like, and it is not assumed that the subject himself / herself will confirm the index data. Therefore, in order for the subject to confirm the index data, there is an inconvenience that the subject has to visit a hospital or the like. For this reason, there has been a problem that the subject cannot easily confirm the index data of the brain function.

[0006] The present invention has been made to solve the above problems, and one object of the present invention is to provide a brain function measurement system and a brain function measurement method that enable a subject to easily confirm index data of the brain function.

Means for Solving the Problems

[0007] In order to achieve the above object, a brain function measurement system according to a first aspect of the present invention includes a signal measurement unit that measures a signal based on the blood flow in the brain of a subject, a task presentation unit that presents a task for measuring the brain function of the subject, a measurement result acquisition unit that acquires a measurement result of the signal measured by the signal measurement unit while the task is being presented, an index data generation unit that generates index data, which is an index of the brain function, based on the measurement result acquired by the measurement result acquisition unit, identification information for identifying the subject, a storage unit that stores the measurement result and the index data in association with each other based on the identification information, and a data transmission unit that transmits the index data identified based on the identification information to a terminal operated by the subject, and a server including the above components.

[0008] Also, in order to achieve the above object, a brain function measurement method according to a second aspect of the present invention includes: presenting a task for measuring the brain function of a subject; obtaining a measurement result of a signal based on the blood flow in the brain of the subject while the task is being presented; transmitting the measurement result to a server together with specific information for identifying the subject; generating index data, which is an index of brain function, based on the measurement result; associating and storing the specific information, the measurement result, and the index data; receiving the specific information and transmitting the index data identified based on the received specific information to a terminal operated by the subject; and displaying the index data on the terminal.

Advantages of the Invention

[0009] In the brain function measurement system according to the first aspect described above, as described above, an index data generation unit that generates index data, which is an index of brain function, a storage unit that associates and stores specific information for identifying a subject, a measurement result, and the index data, and a data transmission unit that transmits the index data identified based on the specific information to a terminal operated by the subject, and a server including these are provided. As a result, since the index data is transmitted from the server to the terminal, the subject can confirm the index data using the terminal owned by the subject. As a result, for example, the subject can confirm the index data using the terminal owned by the subject without visiting a hospital or the like, so that the subject can easily confirm the index data of the brain function.

[0010] Also, in the brain function measurement method according to the second aspect described above, as described above, it includes the step of receiving the specific information and transmitting the index data identified based on the received specific information to a terminal operated by the subject. As a result, similar to the brain function measurement system according to the first aspect, it is possible to provide a brain function measurement method that enables the subject to easily confirm the index data of the brain function.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

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Figure 9

Figure 10

Mode for Carrying Out the Invention

[0012] Hereinafter, embodiments embodying the present invention will be described with reference to the drawings.

[0013] First, with reference to FIGS. 1 to 5, the configuration of a brain function measurement system 100 according to an embodiment of the present invention will be described.

[0014] As shown in FIG. 1, the brain function measurement system 100 includes a measurement device 1 and a server 2. The measurement device 1 and the server 2 are connected via a network 80. The network 80 is, for example, the Internet.

[0015] The measurement device 1 is configured to measure a signal 4 (see FIG. 7) based on the blood flow in the brain of the subject 90 (see FIG. 3). The detailed configuration of the measurement device 1 will be described later.

[0016] The server 2 is configured to generate index data 41 (see FIG. 4), which is an index of the brain function of the subject 90 (see FIG. 3), based on the measurement result 40 (see FIG. 2) measured by the measurement device 1. The detailed configuration of the server 2 will be described later.

[0017] Further, the server 2 according to the present embodiment is connected to a terminal 3 operated by the subject 90 via the network 80. Note that the server 2 and the terminal 3 are not always connected, and are connected when there is an access from the terminal 3 to the server 2. The terminal 3 includes, for example, a smartphone, a tablet terminal, a personal computer, and the like.

[0018] The subject 90 (see FIG. 3) can operate the terminal 3 to acquire and confirm the index data 41 (see FIG. 4) from the server 2.

[0019] <Measurement Device> Next, the measurement device 1 will be described with reference to FIGS. 2 and 3.

[0020] As shown in FIG. 2, the measurement device 1 includes a first processor 10, a signal measurement unit 11, a task presentation unit 12, a first data transmission unit 13, a first input reception unit 14, and a first storage unit 15.

[0021] The first processor 10 is configured to perform various controls of the measuring device 1 by executing a program (not shown) stored in the first storage unit 15. The first processor 10 is a computer including a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like.

[0022] The signal measurement unit 11 is configured to measure a signal 4 (see FIG. 7) based on the blood flow in the brain of the subject 90 (see FIG. 3). The signal measurement unit 11 includes a plurality of light irradiation units 11a that irradiate measurement light, a plurality of light receiving units 11b that receive the measurement light, and a holder 11c that holds the plurality of light irradiation units 11a and the plurality of light receiving units 11b and is attached to the head 90a of the subject 90.

[0023] The light irradiation unit 11a includes a light source, a light transmission probe, and an optical fiber 11d (see FIG. 3) that connects the light source and the light transmission probe.

[0024] The light receiving unit 11b includes an optical sensor that detects the measurement light, a light receiving probe, and an optical fiber 11d (see FIG. 3) that connects the optical sensor and the light receiving probe.

[0025] The holder 11c is configured to hold the light transmission probe and the light receiving probe. Specifically, the holder 11c holds the light transmission probe and the light receiving probe so that the light transmission probe and the light receiving probe are arranged on the head 90a (see FIG. 3) of the subject 90 (see FIG. 3).

[0026] In the present embodiment, the light irradiation unit 11a is configured to irradiate measurement light in the near-infrared region. That is, the measuring device 1 is a device that measures the brain function of the subject 90 by so-called near-infrared spectroscopy (NIRS). The wavelength range of the near-infrared light is, for example, 700 nm or more and 900 nm or less. Since the absorption rate of near-infrared light in the living body is small, the measurement light can reach the brain region inside the head 90a (see FIG. 3).

[0027] Here, when the amount of hemoglobin in the brain increases at the activation site in response to the brain activity of the subject 90, the absorption amount of the measurement light by hemoglobin increases. Therefore, it is possible to obtain the change in the amount of hemoglobin accompanying brain activity based on the intensity of the acquired measurement light. Note that hemoglobin is divided into oxyhemoglobin bound to oxygen and deoxyhemoglobin not bound to oxygen, and they have different light absorption characteristics. For this reason, the measurement device 1 performs measurement using measurement light of a plurality of wavelengths (for example, three wavelengths of 780 nm, 805 nm, and 830 nm) considering the difference in light absorption characteristics. Based on the intensity (received light amount) of the measurement light of each obtained wavelength, the temporal changes in the amount of each hemoglobin and the total amount are calculated. As a result, based on the intensity (received light amount) of the measurement light incident on the light receiving unit 11b, it is possible to non-invasively obtain the change in the amount of hemoglobin accompanying brain activity, that is, the change in blood flow and the activation state of oxygen metabolism.

[0028] The task presentation unit 12 is configured to present a task 43 for measuring the brain function of the subject 90 (see FIG. 3). The task 43 is acquired from the server 2 (see FIG. 1) by the first processor 10 based on the specific information 42 (see FIG. 4) input by the subject 90. The task presentation unit 12 includes a display device that presents the task 43 to the subject 90 by displaying the task 43, and a stimulus presentation device that presents the task 43 by giving a sensory stimulus to the subject 90.

[0029] In this embodiment, the brain function measurement system 100 is configured to measure the cognitive function of the subject 90. Therefore, the task 43 includes tasks that can measure the cognitive function of the subject 90. Specifically, the task 43 includes a first task 43a related to memory and a second task 43b related to sensory stimulation and memory. The task presentation unit 12 includes a first task presentation unit 12a that presents the first task 43a and a second task presentation unit 12b that presents the second task 43b. The first task presentation unit 12a is a display device. The second task presentation unit 12b is a stimulus presentation device. Details of the first task 43a and the second task 43b will be described later.

[0030] The first data transmission unit 13 is configured to transmit the measurement result 40 of the signal 4 (see FIG. 7) measured by the signal measurement unit 11 to the server 2 (see FIG. 1). The first data transmission unit 13 includes, for example, a communication device that communicates data via the network 80.

[0031] The first input reception unit 14 is configured to be able to receive an operation input from the subject 90 (see FIG. 3). The first input reception unit 14 includes, for example, any one of a mouse, a keyboard, and a touch panel type liquid crystal display.

[0032] The first storage unit 15 is configured to store various programs executed by the first processor 10. The first storage unit 15 is also configured to store the measurement result 40, the task 43 acquired by the task presentation unit 12, the information 44 of the task 43, and the like. The first storage unit 15 includes, for example, a non-volatile storage device such as an HDD (Hard Disk Drive) or an SSD (Solid State Drive). The information 44 of the task 43 includes information for discriminating the type of the task 43 executed by the subject 90. Specifically, the information 44 of the task 43 includes the content of the task 43 executed by the subject 90 and the information on the timing when the task 43 was presented in the measurement result 40.

[0033] In the present embodiment, the task presentation unit 12 and the measurement result acquisition unit 10a (see FIG. 7) are provided in a single measurement device 1 configured to be communicable with the server 2. Specifically, the task presentation unit 12 and the measurement result acquisition unit 10a are provided in the same housing 1a (see FIG. 3) of the measurement device 1.

[0034] As shown in FIG. 3, the holder 11c is attached to the head 90a of the subject 90 while holding a plurality of light irradiation units 11a (see FIG. 2) and a plurality of light receiving units 11b (see FIG. 2). In the present embodiment, the holder 11c is configured to be attachable to the head 90a of the subject 90 by the subject 90 himself / herself. Also, in the example shown in FIG. 3, the light transmission probe included in the light irradiation unit 11a and the light reception probe included in the light receiving unit 11b are held by the holder 11c as the measurement unit 11e. In the example shown in FIG. 3, four measurement units 11e are held by the holder 11c. At least one light transmission probe and at least one light reception probe are provided in each measurement unit 11e. Each measurement unit 11e is provided with, for example, one light irradiation unit 11a and one light receiving unit 11b. Also, each measurement unit 11e is connected to the measurement device 1 by an optical fiber 11d. Note that, in the example shown in FIG. 3, the state where the optical fiber 11d that connects the light transmission probe and the light source and the optical fiber that connects the light reception probe and the optical sensor are bundled is illustrated.

[0035] In the example shown in FIG. 3, the first task presentation unit 12a is a display device provided in the measurement device 1. In a specific example, the first task presentation unit 12a is configured to present the first task 43a by displaying the first task 43a related to memory. The first task 43a includes, for example, a calculation task. Also, the first task 43a includes calculation tasks with different levels of difficulty. Among the calculation tasks with different levels of difficulty, the task with a lower level of difficulty is presented first, and the task with a higher level of difficulty is presented later. The calculation task with a lower level of difficulty is, for example, a problem of continuously subtracting 2 from 100. Also, the calculation task with a higher level of difficulty is, for example, a problem of continuously subtracting 7 from 102.

[0036] Also, in the example shown in FIG. 3, the second task presentation unit 12b is configured to present the second task 43b by writing characters on the palm of the subject 90 with the hand of the subject 90 placed. The second task presentation unit 12b is configured to write characters on the palm of the subject 90 by, for example, pressure stimulation. Also, the second task 43b also includes tasks with different levels of difficulty. In the present embodiment, the second task presentation unit 12b presents the task 43 related to sensory stimulation and memory by continuously tracing, for example, any combination of two characters or any combination of three characters from the three characters "su", "ma", and "nu" on the palm of the subject 90. The second task 43b with a low level of difficulty is a task of continuously tracing any combination of two characters from the three characters "su", "ma", and "nu" on the palm of the subject 90. Also, the second task 43b with a high level of difficulty is a task of continuously tracing any combination of three characters from the three characters "su", "ma", and "nu" on the palm of the subject 90.

[0037] 〈Server〉 Next, with reference to FIG. 4, the configuration of the server 2 will be described. The server 2 includes a second processor 20, a second storage unit 21, and a second data transmission unit 22. The server 2 is configured to generate index data 41 that is an index of brain function. Also, the server 2 is configured to transmit the index data 41 for display on the display unit 32 (see FIG. 5) included in the terminal 3 (see FIG. 5) to the terminal 3.

[0038] The second processor 20 is configured to perform various controls of the server 2 by executing a program (not shown) stored in the second storage unit 21. The second processor 20 is a computer configured to include a CPU, a ROM, a RAM, and the like.

[0039] The second storage unit 21 is configured to store various programs executed by the second processor 20. Further, the second storage unit 21 is configured to store the measurement result 40 transmitted from the measuring device 1 (see FIG. 2), the index data 41 which is an index of brain function, the specific information 42 for identifying the subject 90, and the tasks 43 (the first task 43a and the second task 43b) executed by the subject 90 (see FIG. 3). In the present embodiment, the second storage unit 21 is configured to store the specific information 42, the measurement result 40, and the index data 41 in an associated manner.

[0040] The specific information 42 includes at least one of an identification number unique to the subject 90 and biometric authentication information of the subject 90. The biometric authentication information of the subject 90 includes, for example, information on the fingerprint of the subject 90, information on the iris of the subject 90, information on the vein arrangement pattern of the subject 90, and the like. The second storage unit 21 includes a non-volatile storage device such as an HDD or an SSD, for example. The second storage unit 21 is an example of the "storage unit" in the claims.

[0041] The second data transmission unit 22 is configured to transmit the index data 41 specified based on the specific information 42 to the terminal 3 (see FIG. 5) operated by the subject 90. The second data transmission unit 22 includes a communication device that performs data communication via a network 80, for example. The second data transmission unit 22 is an example of the "data transmission unit" in the claims.

[0042] Details of the configuration in which the server 2 generates the index data 41 and the configuration in which the server 2 transmits the index data 41 to the terminal 3 will be described later.

[0043] 〈Terminal〉 Next, with reference to FIG. 5, the configuration of the terminal 3 operated by the subject 90 will be described. The terminal 3 includes a third processor 30, a third storage unit 31, a display unit 32, a second input reception unit 33, and a third data transmission unit 34.

[0044] The third processor 30 is configured to perform various controls of the terminal 3 by executing the programs stored in the third storage unit 31. The third processor 30 is a computer including a CPU, a ROM, a RAM, and the like.

[0045] The third storage unit 31 is configured to store various programs executed by the third processor 30. The third storage unit 31 includes, for example, a non-volatile storage device such as an HDD or an SSD.

[0046] The display unit 32 is configured to display the index data 41 (see FIG. 4) acquired from the server 2 (see FIG. 4). The display unit 32 includes, for example, a liquid crystal monitor.

[0047] The second input reception unit 33 is configured to be able to receive the operation input of the subject 90. The second input reception unit 33 includes, for example, a touch pad. Note that the terminal 3 includes a touch panel type display in which the display unit 32 and the second input reception unit 33 are integrated.

[0048] The third data transmission unit 34 is configured to transmit the specific information 42 (see FIG. 4) input by the subject 90 to the server 2 (see FIG. 4). The third data transmission unit 34 includes, for example, a communication device that performs data communication via the network 80.

[0049] 〈Brain function measurement process〉 Next, with reference to FIG. 6, the brain function measurement process in the brain function measurement method according to the present embodiment will be described.

[0050] The brain function measurement process is roughly divided into: step 101 of the measurement process executed by the measurement device 1 (see FIG. 1), the transmission of task 43 (see FIG. 4) executed by the server 2 (see FIG. 4), the generation of index data 41 (see FIG. 4), and step 200 of the transmission process of the index data 41, and step 300 of the acquisition and display process of the index data 41 executed by the terminal 3 (see FIG. 1). Note that the brain function measurement process shown in FIG. 6 is executed on the premise that the subject 90 has registered specific information 42 with the server 2 in advance.

[0051] In step 101a, the first processor 10 (see FIG. 2) of the measurement device 1 (see FIG. 2) acquires the specific information 42 input by the subject 90.

[0052] In step 101b, the first processor 10 transmits the specific information 42 to the server 2 (see FIG. 4) via the first data transmission unit 13 (see FIG. 2). That is, through the processes of step 101a and step 101b, the subject 90 logs in to the brain function measurement system 100 by the measurement device 1.

[0053] Next, the process moves to the process on the server 2. That is, in step 200a, the second processor 20 (see FIG. 4) receives the specific information 42 transmitted from the measurement device 1 (the first data transmission unit 13).

[0054] In step 200b, the second processor 20 acquires the task 43 (see FIG. 4) based on the specific information 42. Specifically, the second processor 20 acquires the first task 43a (see FIG. 4) and the second task 43b (see FIG. 4) based on the specific information 42.

[0055] In step 200c, the second processor 20 transmits the task 43 to the measurement device 1. Specifically, the second processor 20 transmits the first task 43a and the second task 43b to the measurement device 1.

[0056] The process returns to the measuring device 1 again. That is, in step 101c, the first processor 10 receives task 43. Specifically, the first processor 10 receives the first task 43a and the second task 43b.

[0057] In step 101d, the first processor 10 starts acquiring signal 4 (see FIG. 7) by the signal measurement unit 11 (see FIG. 7).

[0058] In step 101e, the first processor 10 presents task 43 for measuring the brain function of the subject 90 via the task presentation unit 12. Note that the first processor 10 does not present the first task 43a and the second task 43b simultaneously in parallel, but presents the first task 43a and the second task 43b in a preset order. Specifically, the second task presentation unit 12b presents the second task 43b. Thereafter, the first task presentation unit 12a presents the first task 43a. Note that the second task presentation unit 12b may present the second task 43b after the first task presentation unit 12a presents the first task 43a.

[0059] In step 101f, the first processor 10 acquires the measurement result 40 (see FIG. 7) of signal 4 based on the blood flow in the brain of the subject 90 (see FIG. 3) while task 43 is being presented. Specifically, the first processor 10 acquires the measurement result 40 while the second task 43b is being presented and the measurement result 40 while the first task 43a is being presented. That is, in step 101f, the first processor 10 ends the acquisition of signal 4 by the signal measurement unit 11 and acquires the signal 4 from the start point to the end point of the acquisition of signal 4 as the measurement result 40. In other words, the measurement result 40 is a data group of a plurality of signals 4 measured while task 43 is being presented by the task presentation unit 12.

[0060] In step 101g, the first processor 10 transmits the measurement result 40 to the server 2 via the first data transmission unit 13. Note that the first processor 10 transmits the measurement result 40 to the server 2 together with the specific information 42 that identifies the subject 90. Thereafter, the processing by the measuring device 1 ends. Note that the first processor 10 may be configured to display a message indicating that the measurement has ended before ending the processing by the measuring device 1.

[0061] Next, the processing moves to the server 2. That is, in step 200d, the second processor 20 receives the measurement result 40. Note that the second processor 20 also receives the specific information 42 together with the measurement result 40.

[0062] In step 200e, the second processor 20 generates index data 41 (see FIG. 4), which is an index of brain function, based on the measurement result 40. Details of the configuration in which the second processor 20 generates the index data 41 will be described later.

[0063] In step 200f, the second processor 20 associates and stores the specific information 42, the measurement result 40, and the index data 41.

[0064] Next, the processing moves to the terminal 3. That is, in step 300a, the third processor 30 (see FIG. 5) acquires the specific information 42 input based on the operation input of the subject 90.

[0065] In step 300b, the third processor 30 transmits the specific information 42 to the server 2 via the third data transmission unit 34. That is, by the processing in step 300a and step 300b, the subject 90 logs in to the brain function measurement system 100 using the terminal 3.

[0066] Here, the processing moves to the server 2. That is, in step 200g, the second processor 20 receives the specific information 42 transmitted from the terminal 3.

[0067] In step 200h, the second processor 20 identifies the index data 41 based on the received specific information 42.

[0068] In step 200i, the second processor 20 transmits the identified index data 41 to the terminal 3 operated by the subject 90. The processing in the server 2 ends.

[0069] Here, the processing moves back to the terminal 3 again. That is, in step 300c, the third processor 30 receives the index data 41.

[0070] In step 300d, the third processor 30 displays the index data 41 on the terminal 3 (display unit 32 (see FIG. 6)). Then, the processing ends.

[0071] 〈Transmission of Information from the Measuring Device to the Server〉 Next, with reference to FIG. 7, a configuration in which the first processor 10 transmits the measurement result 40 to the server 2 will be described.

[0072] As shown in FIG. 7, the first processor 10 includes a measurement result acquisition unit 10a, a first specific information acquisition unit 10b, and a first data association unit 10c. The measurement result acquisition unit 10a, the first specific information acquisition unit 10b, and the first data association unit 10c are configured software-wise as functional blocks realized when the first processor 10 executes various programs. The measurement result acquisition unit 10a, the first specific information acquisition unit 10b, and the first data association unit 10c may be configured hardware-wise by providing a dedicated processor (processing circuit) for the measuring device 1 (see FIG. 2).

[0073] The measurement result acquisition unit 10a is configured to acquire the measurement result 40 of the signal 4 measured by the signal measurement unit 11 while the task 43 (see FIG. 2) is presented. Further, the measurement result acquisition unit 10a acquires the measurement date and time 45, which is information on the date and time when the signal 4 was acquired, from a time server (not shown). Further, the measurement result acquisition unit 10a outputs the measurement result 40 and the measurement date and time 45 to the first data association unit 10c.

[0074] The first specific information acquisition unit 10b acquires the specific information 42 input by the subject 90 via the first input reception unit 14. Further, the first specific information acquisition unit 10b outputs the acquired specific information 42 to the first data association unit 10c.

[0075] The first data association unit 10c acquires the measurement result 40 and the measurement date and time 45 from the measurement result acquisition unit 10a. Further, the first data association unit 10c acquires the specific information 42 from the first specific information acquisition unit 10b. Further, the first data association unit 10c acquires the information 44 of the task 43 from the first storage unit 15. The first data association unit 10c obtains the first associated data 46 by associating the acquired specific information 42, the measurement result 40, the information 44 of the task 43, and the measurement date and time 45. Note that the first associated data 46 is a data structure in which the specific information 42, the measurement result 40, and the information 44 of the task 43 are linked so that the subject 90 can be specified by the specific information 42. The first data association unit 10c outputs the first associated data 46 to the first data transmission unit 13.

[0076] The first data transmission unit 13 transmits the first associated data 46 input from the first data association unit 10c to the server 2. That is, the first data transmission unit 13 transmits to the server 2 in a state where the specific information 42, the measurement result 40, and the information 44 of the task 43 are associated.

[0077] 〈Index data generation〉 Next, with reference to FIG. 8, a configuration in which the second processor 20 generates the index data 41 and stores it in the second storage unit 21 will be described.

[0078] The second processor 20 includes an index data generation unit 20a, a second specific information acquisition unit 20b, and a second data association unit 20c. The index data generation unit 20a, the second specific information acquisition unit 20b, and the second data association unit 20c are configured software-wise as functional blocks realized by the second processor 20 executing various programs. The index data generation unit 20a, the second specific information acquisition unit 20b, and the second data association unit 20c may be configured hardware-wise by providing a dedicated processor (processing circuit) for the server 2 (see FIG. 4).

[0079] The index data generation unit 20a is configured to generate index data 41 that is an index of brain function. In the present embodiment, the index data generation unit 20a is provided in the server 2. The index data generation unit 20a acquires the measurement result 40 and the information 44 of the task 43 from among the first association data 46 transmitted from the first data transmission unit 13. The index data generation unit 20a is configured to generate the index data 41 based on the information 44 of the task 43 transmitted from the measurement device 1 and the measurement result 40. The index data generation unit 20a generates the index data 41 based on the measurement result 40 while the first task 43a (see FIG. 4) is presented and the measurement result 40 while the second task 43b (see FIG. 4) is presented. Note that the index data generation unit 20a specifies the type of the presented task 43 in the measurement result 40 based on the information 44 of the task 43.

[0080] The index data generation unit 20a acquires an index value of the brain function of the subject 90 based on the measurement result 40. The index data generation unit 20a acquires, for example, the average value of the waveform of the measurement result 40, the value indicating the area centroid of the waveform of the measurement result 40, or the value indicating the slope (maximum value of the slope) of the waveform of the measurement result 40 as the index value. Note that the waveform of the measurement result 40 is a curve indicating the change in the blood flow volume of the brain.

[0081] In addition, the index data generation unit 20a generates index data 41 based on the acquired index values. The index data 41 includes a comment 49a (see FIG. 10) representing the state of the brain function of the subject 90, a pictogram 49b (see FIG. 10) representing the state of the brain function of the subject 90, and a video 49c (see FIG. 10) generated based on the change in the blood flow in the brain when the subject 90 is executing the task 43 (see FIG. 4).

[0082] The index data generation unit 20a outputs the generated index data 41 and the acquired measurement result 40 to the second data association unit 20c.

[0083] The second specific information acquisition unit 20b is configured to acquire specific information 42 from among the first association data 46 transmitted from the first data transmission unit 13. In addition, the second specific information acquisition unit 20b outputs the acquired specific information 42 to the second data association unit 20c.

[0084] The second data association unit 20c acquires the index data 41 and the measurement result 40 from the index data generation unit 20a. In addition, the second data association unit 20c acquires the specific information 42 from the second specific information acquisition unit 20b. Further, the second data association unit 20c acquires the measurement date and time 45 included in the first association data 46. The second data association unit 20c acquires second association data 47 in which the measurement result 40, the index data 41, and the specific information 42 are associated. Note that the second association data 47 has a data structure in which the measurement result 40, the specific information 42, and the index data 41 are linked so that the subject 90 can be specified by the specific information 42. Also, in the present embodiment, the second data association unit 20c associates the measurement result 40, the index data 41, the specific information 42, and the measurement date and time 45 as the second association data 47. The second data association unit 20c outputs the second association data 47 to the second storage unit 21.

[0085] The second storage unit 21 stores the second associated data 47. That is, the second storage unit 21 stores the specific information 42, the measurement result 40, and the index data 41 in an associated state. Also, the second storage unit 21 is configured to store the measurement result 40 and the index data 41 over time for each subject 90. Specifically, each time the measurement result 40 is measured, the second storage unit 21 stores the measurement result 40 and the index data 41 for each subject 90. Therefore, in the second storage unit 21, the measurement results 40 and the index data 41 for each subject 90 are stored in the order of the measurement date and time 45.

[0086] 〈Transmission of Index Data from Server to Terminal〉 Next, with reference to FIG. 9, a configuration in which the server 2 (see FIG. 4) transmits the index data 41 to the terminal 3 will be described.

[0087] As shown in FIG. 9, the second processor 20 further includes an index data specifying unit 20d. The index data specifying unit 20d is configured software-wise as a functional block realized by the second processor 20 executing various programs. The index data specifying unit 20d may be configured hardware-wise by providing a dedicated processor (processing circuit) for the server 2.

[0088] Here, there may be a case where the subject 90 wants to check the index data 41 of a desired date and the past index data 41a, which is the index data 41 before that, among the index data 41 stored in the server 2. Therefore, in the present embodiment, the index data specifying unit 20d is configured to acquire the period information 48 from the terminal 3. The period information 48 includes the date of the start date of the period.

[0089] The index data specifying unit 20d acquires the specific information 42 and the period information 48 from the third data transmitting unit 34. The index data specifying unit 20d specifies a plurality of index data 41 corresponding to the period information 48 based on the period information 48 input together with the specific information 42. Specifically, the index data specifying unit 20d specifies the index data 41 of the starting date and the past index data 41a which is the index data 41 before the starting date, with the date transmitted from the terminal 3 as the starting date. Note that the number of the plurality of index data 41 to be acquired is preset and stored in the second storage unit 21. In the present embodiment, for example, six (for six days) pieces of index data 41 are acquired as the plurality of index data 41. That is, the index data specifying unit 20d specifies a total of six days' worth of index data 41, which is the index data 41 of the starting date and the past index data 41a for the past five days from the starting date.

[0090] The index data specifying unit 20d outputs the specified index data 41 and the past index data 41a to the second data transmitting unit 22.

[0091] The second data transmitting unit 22 is configured to transmit a plurality of index data 41 corresponding to the period information 48 to the terminal 3 based on the period information 48 input together with the specific information 42. In the present embodiment, the second data transmitting unit 22 is configured to transmit the index data 41 of the starting date and the past index data 41a which is the index data 41 before the starting date to the terminal 3, with the date transmitted from the terminal 3 as the starting date.

[0092] <Example of the screen when displaying the index data> Next, with reference to FIG. 10, an example of a screen 32a when the index data 41 transmitted from the server 2 (see FIG. 4) to the terminal 3 (see FIG. 5) according to the present embodiment is displayed on the display unit 32 (see FIG. 5) will be described.

[0093] At the upper part of the screen 32a that displays the index data 41, the date 60 on which the index data 41 displayed on the screen 32a was acquired is displayed. Also, on the screen 32a, as the index data 41, a comment 49a representing the state of the brain function of the subject 90, a pictogram 49b representing the state of the brain function of the subject 90, and a video 49c generated based on the change in the blood flow volume of the brain when the subject 90 (see FIG. 3) is executing the task 43 (see FIG. 4) are displayed.

[0094] The comment 49a representing the state of the brain function of the subject 90 includes a plurality of messages corresponding to the brain function of the subject 90. Also, the pictogram 49b representing the state of the brain function of the subject 90 includes a plurality of icons corresponding to the brain function of the subject 90. The plurality of comments 49a and the plurality of pictograms 49b are stored in the second storage unit 21 (see FIG. 4), and the corresponding comment 49a and pictogram 49b are selected according to the index value and displayed on the screen 32a.

[0095] In the video 49c, by varying the display mode of the circle 61 displayed on the schematic diagram of the brain, the change in the blood flow volume of the brain is displayed in an identifiable manner. In the present embodiment, for example, a video 49c in which the shade of the color of the circle 61 is changed according to the change in the blood flow volume of the brain is displayed.

[0096] Also, on the video 49c, a seek bar 62 for displaying the playback position of the video 49c is displayed. Also, on the seek bar 62, a text 62a that can identify the playback position during the execution of the first task 43a (see FIG. 4) and the playback position during the execution of the second task 43b (see FIG. 4) in the video 49c is displayed.

[0097] Further, at the lower part of the screen 32a, a history 50 of the index data 41 is displayed. Specifically, at the lower part of the screen 32a, as the history 50 of the index data 41, the index data 41 (pictogram 49b) and the past index data 41a are displayed. In the example shown in FIG. 10, as the past index data 41a, data for the past five times starting from the date when the index data 41 was acquired is displayed. That is, a total of six pieces of index data 41 are displayed as the history 50 of the index data 41.

[0098] (Effects of the present embodiment) In the present embodiment, the following effects can be obtained.

[0099] In the present embodiment, as described above, the brain function measurement system 100 includes a signal measurement unit 11 that measures a signal 4 based on the blood flow in the brain of the subject 90, a task presentation unit 12 that presents a task 43 for measuring the brain function of the subject 90, a measurement result acquisition unit 10a that acquires a measurement result 40 of the signal 4 measured by the signal measurement unit 11 while the task 43 is being presented, an index data generation unit 20a that generates index data 41 that is an index of brain function based on the measurement result 40 acquired by the measurement result acquisition unit 10a, identification information 42 for identifying the subject 90, a storage unit (second storage unit 21) that stores the measurement result 40, the index data 41, and the identification information 42 in association with each other, and a data transmission unit (second data transmission unit 22) that transmits the index data 41 identified based on the identification information 42 to the terminal 3 operated by the subject 90, and a server 2 including the above.

[0100] As a result, since the index data 41 is transmitted from the server 2 to the terminal 3, the subject 90 can confirm the index data 41 using the terminal 3 owned by the subject 90. As a result, for example, the subject 90 can confirm the index data 41 using the terminal 3 owned by the subject 90 without visiting a hospital or the like, so that the subject 90 can easily confirm the index data 41 of the brain function.

[0101] Also, in the present embodiment, as described above, the brain function measurement method includes a step of presenting a task 43 for measuring the brain function of the subject 90, a step of obtaining a measurement result 40 of a signal 4 based on the blood flow in the brain of the subject 90 while the task 43 is being presented, a step of transmitting the measurement result 40 to the server 2 together with the specific information 42 for identifying the subject 90, a step of generating index data 41 which is an index of brain function based on the measurement result 40, a step of associating and storing the specific information 42, the measurement result 40, and the index data 41, a step of receiving the specific information 42 and transmitting the index data 41 identified based on the received specific information 42 to the terminal 3 operated by the subject 90, and a step of displaying the index data 41 on the terminal 3.

[0102] Thereby, similarly to the above-described brain function measurement system 100, it is possible to provide a brain function measurement method by which the subject 90 can easily confirm the index data 41 of the brain function.

[0103] Also, in the above embodiment, by configuring as follows, the following further effects can be obtained.

[0104] That is, in the present embodiment, as described above, the server 2 is configured to store the measurement result 40 and the index data 41 over time for each subject 90, and the data transmission unit (second data transmission unit 22) is configured to transmit a plurality of index data 41 corresponding to the information 48 of the period to the terminal 3 based on the information 48 of the period input together with the specific information 42. Thereby, among the index data 41 stored over time, a plurality of index data 41 corresponding to the period desired by the subject 90 can be transmitted to the terminal 3. As a result, since the subject 90 can confirm a plurality of index data 41 of the period desired by the subject 90, the subject 90 can grasp the history of the index data 41 of the brain function of the desired period.

[0105] Also, in the present embodiment, as described above, the period information 48 includes the date of the start date of the period, and the data transmission unit (second data transmission unit 22) uses the date transmitted from the terminal 3 as the start date, and transmits the index data 41 of the start date and the past index data 41a which is the index data 41 before the start date to the terminal 3. Thereby, the subject 90 can easily acquire the index data 41 of the start date and the past index data 41a before the start date by inputting the start date of the period with the terminal 3. As a result, compared with the configuration in which the subject 90 selects each of the index data 41 and the past index data 41a to be displayed on the terminal 3, the operation can be simplified.

[0106] Also, in the present embodiment, as described above, the server 2 is configured to transmit the index data 41 for display on the display unit 32 included in the terminal 3 to the terminal 3. Thereby, since it becomes possible to display the index data 41 on the display unit 32 of the terminal 3, the subject 90 can check the index data 41 at an arbitrary location and at an arbitrary timing. As a result, the convenience (usability) of the subject 90 can be improved.

[0107] Also, in the present embodiment, as described above, the specific information 42 includes at least either an identification number unique to the subject 90 or biometric authentication information of the subject 90. Thereby, for example, when the specific information 42 is an identification number unique to the subject 90, the subject 90 can be identified without using the personal information of the subject 90. As a result, leakage of personal information can be suppressed. Also, for example, when the specific information 42 is the biometric authentication information of the subject 90, even if the subject 90 forgets the identification number, for example, based on biometric authentication information such as the fingerprint information of the subject 90 or the iris information of the subject 90, it becomes possible to identify the subject 90. Therefore, the convenience (usability) of the subject 90 can be improved.

[0108] Also, in the present embodiment, as described above, the task presentation unit 12 and the measurement result acquisition unit 10a are provided in a single measuring device 1 configured to be communicable with the server 2, and the index data generation unit 20a is provided in the server 2. The index data generation unit 20a is configured to generate index data 41 based on the information 44 of the task 43 transmitted from the measuring device 1 and the measurement result 40. Thus, unlike the configuration in which the index data generation unit 20a is provided in the measuring device 1 and the index data 41 is displayed on the measuring device 1, by accessing the server 2 with the terminal 3, the terminal 3 can confirm the index data 41 without visiting the facility where the measuring device 1 is installed. As a result, after acquiring the measurement result 40, the subject 90 can confirm the index data 41 regardless of the location and time.

[0109] Also, in the present embodiment, as described above, the task 43 includes a first task 43a related to memory and a second task 43b related to sensory stimulation and memory, and the task presentation unit 12 includes a first task presentation unit 12a that presents the first task 43a and a second task presentation unit 12b that presents the second task 43b. Thus, for example, unlike the configuration in which the task presentation unit 12 presents only one of the first task presentation unit 12a and the second task presentation unit 12b, a plurality of types of tasks 43 can be presented to the subject 90. As a result, since it is possible to measure the brain function of the subject 90 with a plurality of types of tasks 43, the brain function of the subject 90 can be measured in more detail.

[0110] Also, in the present embodiment, as described above, the signal measurement unit 11 includes a plurality of light irradiation units 11a that irradiate measurement light, a plurality of light reception units 11b that receive the measurement light, the plurality of light irradiation units 11a, the plurality of light reception units 11b, and a holder 11c that holds them and is attached to the head 90a of the subject 90. Thus, unlike a configuration in which the brain function of the subject 90 is measured by, for example, an MRI (Magnetic Resonance Imaging) device or the like, the brain function of the subject 90 can be measured by the subject 90 wearing the holder 11c. As a result, for example, by arranging the signal measurement unit 11 (measurement device 1) in a nursing home, a nursing facility, a sports gym, or the like, the brain function of the subject 90 can be measured by the subject 90 himself / herself at the location where the signal measurement unit 11 is arranged.

[0111] [Modification Example] It should be considered that the embodiment disclosed this time is illustrative in all respects and not restrictive. The scope of the present invention is shown by the claims rather than the description of the above-described embodiment, and further includes all changes (modification examples) within the meaning and scope equivalent to the claims.

[0112] For example, in the above embodiment, an example of a configuration in which the second data transmission unit 22 transmits a plurality of index data 41 corresponding to the period information 48 to the terminal 3 based on the period information 48 is shown, but the present invention is not limited to this. For example, the second data transmission unit 22 may be configured to transmit one piece of index data 41 corresponding to the period information 48 to the terminal 3. That is, when the date that the subject 90 wants to display on the terminal 3 is transmitted from the terminal 3 to the server 2 as the period information 48, the second data transmission unit 22 may be configured to transmit the index data 41 of the date transmitted from the terminal 3 to the terminal 3.

[0113] In the above-described embodiment, an example of a configuration is shown in which the period information 48 includes the start date of the period, and the second data transmission unit 22 transmits the index data 41 of the start date of the period and the past index data 41a prior to the start date to the terminal 3. However, the present invention is not limited to this. For example, the period information 48 may include a plurality of dates that the subject 90 wishes to display. In this case, the second data transmission unit 22 may be configured to transmit the index data 41 of the plurality of dates included in the period information 48 to the terminal 3.

[0114] In the above-described embodiment, an example of a configuration is shown in which the task presentation unit 12 and the measurement result acquisition unit 10a are provided in a single measurement device 1. However, the present invention is not limited to this. The task presentation unit 12 and the measurement result acquisition unit 10a may be provided in different devices.

[0115] In the present embodiment, an example of a configuration is shown in which the holder 11c holds the measurement unit 11e including the light transmission probe and the light reception probe, and the measurement unit 11e and the measurement device 1 are connected by the optical fiber 11d. However, the present invention is not limited to this. For example, the measurement unit 11e may include a light source, a light transmission probe, an optical sensor, and a light reception probe, and may be configured such that the measurement unit 11e is connected to the measurement device 1 by a signal line. Further, for example, the measurement unit 11e including a light source, a light transmission probe, an optical sensor, and a light reception probe may be configured to be connected to the measurement device 1 by a wireless connection.

[0116] In the above-described embodiment, an example of a configuration is shown in which the index data generation unit 20a is provided in the server 2. However, the present invention is not limited to this. For example, the index data generation unit may be provided in the measurement device 1. When the index data generation unit is provided in the measurement device 1, the measurement device 1 may be configured to transmit the index data 41 to the server 2 together with the measurement result 40.

[0117] In the above embodiment, an example of the configuration in which task 43 includes both the first task 43a and the second task 43b was shown, but the present invention is not limited to this. For example, task 43 may include only one of the first task 43a and the second task 43b. In this case, the task presenting unit 12 may be provided with either the first task presenting unit 12a or the second task presenting unit 12b according to the task 43 to be presented. However, when task 43 includes only one of the first task 43a and the second task 43b, the measurement accuracy of the brain function of the subject 90 decreases. Therefore, it is preferable that task 43 includes both the first task 43a and the second task 43b.

[0118] In the above embodiment, an example of the configuration in which the second task presenting unit 12b writes characters by pressure stimulation was shown, but the present invention is not limited to this. In the present invention, if it is possible to give the subject 90 a feeling of writing characters on the palm of the hand, the second task presenting unit 12b may be configured to present the second task 43b by a sensory stimulation other than pressure stimulation, such as a cold sensory stimulation.

[0119] In the above embodiment, an example of the configuration in which the first task presenting unit 12a presents a subtraction calculation problem to the subject 90 as the first task 43a was shown, but the present invention is not limited to this. In the present invention, the first task presenting unit 12a may present any calculation problem of the four arithmetic operations to the subject 90. Also, as long as it is possible to measure cognitive functions such as age, date of measurement, measurement location, immediate memory of words and articles, reverse recitation of numbers, and recall of names of vegetables, the task presented by the first task presenting unit 12a may be any task.

[0120] In the above-described embodiment, an example of the configuration in which the task presentation unit 12 presents the task 43 for measuring the cognitive function of the subject 90 has been shown. However, the present invention is not limited to this. For example, the task presentation unit 12 may be configured to present a task capable of measuring a brain function other than the cognitive function of the subject 90. For example, the task presentation unit 12 may be configured to present a task capable of measuring the motor function of the brain of the subject 90.

[0121] In the above-described embodiment, an example of the configuration in which the measurement device 1 (the first processor 10) acquires the task 43 from the server 2 has been shown. However, the present invention is not limited to this. For example, the task 43 may be stored in the first storage unit 15 provided in the measurement device 1. In this case, the measurement device 1 acquires information for specifying the task 43 to be presented to the subject 90 from the server 2, and based on the information for specifying the acquired task 43, the task 43 stored in the first storage unit 15 may be presented by the task presentation unit 12.

[0122] [Aspect] It is understood by those skilled in the art that the above-described exemplary embodiments are specific examples of the following aspects.

[0123] (Item 1) A signal measurement unit that measures a signal based on the blood flow in the brain of a subject; A task presentation unit that presents a task for measuring the brain function of a subject; A measurement result acquisition unit that acquires the measurement result of the signal measured by the signal measurement unit while the task is being presented; An index data generation unit that generates index data, which is an index of the brain function, based on the measurement result acquired by the measurement result acquisition unit; A storage unit that associates and stores specific information for identifying a subject, the measurement result, and the index data; and a data transmission unit that transmits the index data specified based on the specific information to a terminal operated by the subject. A brain function measurement system comprising a server.

[0124] (Item 2) The server is configured to store the measurement results and the index data over time for each subject. The brain function measurement system according to item 1, wherein the data transmission unit is configured to transmit a plurality of the index data corresponding to the information of the period to the terminal based on the information of the period input together with the specific information.

[0125] (Item 3) The information of the period includes the date of the start date of the period. The brain function measurement system according to item 2, wherein the data transmission unit is configured to transmit the index data of the start date and the past index data, which is the index data before the start date, to the terminal with the date transmitted from the terminal as the start date.

[0126] (Item 4) The brain function measurement system according to any one of items 1 to 3, wherein the server is configured to transmit the index data for display on the display unit included in the terminal to the terminal.

[0127] (Item 5) The brain function measurement system according to any one of items 1 to 4, wherein the specific information includes at least one of an identification number unique to the subject and biometric authentication information of the subject.

[0128] (Item 6) The task presentation unit and the measurement result acquisition unit are provided in a single measuring device configured to be communicable with the server. The brain function measurement system according to any one of items 1 to 5, wherein the index data generation unit is provided in the server and is configured to generate the index data based on the information of the task transmitted from the measuring device and the measurement result.

[0129] (Item 7) The task includes a first task related to memory and a second task related to sensory stimulation and memory. The task presentation unit in the brain function measurement system according to item 6 includes a first task presentation unit that presents the first task and a second task presentation unit that presents the second task.

[0130] (Item 8) The signal measurement unit in the brain function measurement system according to any one of items 1 to 7 includes a plurality of light irradiation units that irradiate measurement light, a plurality of light receiving units that receive the measurement light, and a holder that holds the plurality of light irradiation units and the plurality of light receiving units and is attached to the head of the subject.

[0131] (Item 9) A step of presenting a task for measuring the brain function of a subject; A step of obtaining a measurement result of a signal based on the blood flow in the brain of the subject while the task is being presented; A step of transmitting the measurement result to a server together with specific information for identifying the subject; A step of generating index data that is an index of the brain function based on the measurement result; A step of associating and storing the specific information, the measurement result, and the index data; A step of receiving the specific information and transmitting the index data identified based on the received specific information to a terminal operated by the subject; A step of displaying the index data on the terminal, which is a brain function measurement method.

Explanation of Signs

[0132] 1 Measurement device 2 Server 3 Terminal 10a Measurement result acquisition unit 11 Signal measurement unit 11a Light irradiation unit 11b Light receiving unit 11c Holder 12 Task presentation unit 12a First task presentation unit 12b Second task presentation unit 20a Index data generation unit 21 Second memory unit (memory unit) 22 Second data transmission unit (data transmission unit) 32 Display unit 40 Measurement result 41 Index data 41a Past index data 42 Specific information 43 Task 43a First task 43b Second task 44 Task information 47 Period information 50 Signal (signal based on cerebral blood flow) 90 Subject 100 Brain function measurement system

Claims

1. A signal measurement unit that measures a signal based on the blood flow in the brain of a subject; A task presentation unit that presents a task for measuring the brain function of the subject; A measurement result acquisition unit that acquires the measurement result of the signal measured by the signal measurement unit while the task is being presented; An index data generation unit that generates index data that is an index of the brain function based on the measurement result acquired by the measurement result acquisition unit; A storage unit that associates and stores specific information for identifying the subject, the measurement result, and the index data, and a data transmission unit that transmits the index data identified based on the specific information to a terminal operated by the subject. A brain function measurement system comprising a server.

2. The server is configured to store the measurement result and the index data over time for each subject, The data transmission unit is configured to transmit a plurality of the index data corresponding to the information of the period to the terminal based on the information of the period input together with the specific information. The brain function measurement system according to claim 1.

3. The information of the period includes the date of the start date of the period, The data transmission unit is configured to transmit the index data of the start date and the past index data, which is the index data before the start date, to the terminal with the date transmitted from the terminal as the start date. The brain function measurement system according to claim 2.

4. The server is configured to transmit the index data for display on a display unit included in the terminal to the terminal. The brain function measurement system according to claim 1.

5. The specific information includes at least one of an identification number unique to the subject and biometric authentication information of the subject. The brain function measurement system according to claim 1.

6. The task presentation unit and the measurement result acquisition unit are provided in a single measurement device configured to be communicable with the server, The index data generation unit is provided in the server and is configured to generate the index data based on the information of the task transmitted from the measurement device and the measurement result. The brain function measurement system according to claim 1.

7. The task includes a first task related to memory and a second task related to sensory stimulation and memory. The brain function measurement system according to claim 6, wherein the task presentation unit includes a first task presentation unit that presents the first task and a second task presentation unit that presents the second task.

8. The brain function measurement system according to claim 1, wherein the signal measurement unit includes a plurality of light irradiation units that irradiate measurement light, a plurality of light reception units that receive the measurement light, a holder that holds the plurality of light irradiation units and the plurality of light reception units, and is attached to the head of a subject.

9. A step of presenting a task for measuring the brain function of a subject; A step of obtaining a measurement result of a signal based on the blood flow in the brain of the subject while the task is being presented; A step of transmitting the measurement result to a server together with specific information for identifying the subject; A step of generating index data that is an index of the brain function based on the measurement result; A step of associating and storing the specific information, the measurement result, and the index data; A step of receiving the specific information and transmitting the index data specified based on the received specific information to a terminal operated by the subject; A step of displaying the index data on the terminal, and a brain function measurement method.

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