69 results about "SOUND STIMULATION" patented technology

The invention discloses an electroencephalogram classification method and system based on physiological prior guidance and cross-scale information fusion, electronic equipment and a storage medium, and the electroencephalogram classification method comprises the steps: obtaining sound stimulation data, and carrying out the matching processing of the sound stimulation data to enable the sound stimulation data to have consistency in physical characteristics; the collected electroencephalogram data are preprocessed; dividing the electroencephalogram data into a test set and a training set, and determining hyper-parameters of model training; feature extraction is carried out on the training set electroencephalogram data through a CNN and Transform parallel structure; and the extracted features are classified through a classifier module, and a classifier is trained and verified. According to the method, the global feature extraction capability of Transform and the local feature capture capability of CNN are fused, through a multi-level physiological prior feature guide method, brain state data of different levels are extracted and fused as a classification feature set, and the classification accuracy is effectively improved.

The invention provides a sound source localization rehabilitation training method, system and device and a medium. The sound source localization rehabilitation training method comprises self-adaptive training and scene simulation training, the self-adaptive training comprises the steps of providing a training task in the period, and the training task in the period comprises the step of selecting training difficulty; according to the training difficulty, sound stimulation is presented in different spatial orientations, and the training difficulty can be adjusted according to a certain logic; the training difficulty of the next period of training is adaptively adjusted according to the correct rate p of one training group of the subject until the preset training amount is reached, and the difficulty setting includes but is not limited to scene setting, analog input information amount and signal-to-noise ratio adjustment. According to the scheme, a hearing-impaired person can perform rehabilitation training in a home environment, the need of manual intervention is reduced, and the training convenience and flexibility are improved. Through adaptive training, on the basis of ensuring scientificity, accuracy and effect of a training plan, the positioning ability of the hearing-impaired person is enhanced, and the integration of the hearing-impaired person into the society is accelerated.

The invention discloses an acoustic stimulation nerve regulation and control service management system combining AI and big data analysis, and the system comprises a cloud center layer, a region edge layer, a doctor management layer and a patient terminal layer which are connected with one another, the cloud is provided with a client management module, and an exclusive account is established for each patient; and an individualized sound stimulation scheme is generated and dynamically optimized by using an AI algorithm to realize remote closed-loop regulation and control. The platform supports remote demonstration and teaching of experts, autonomous operation and maintenance of clients and a mutual assistance network of the experts, and a cloud-side-end collaborative AIoT intelligent system is formed. The system is provided with a national-level data supervision interface, so that safety and controllability are ensured. Through the above mode, the AI and big data analysis combined acoustic stimulation nerve regulation and control service management system improves the accuracy and efficiency of personalized scheme formulation and optimization by constructing a collection-analysis-decision-execution-feedback-optimization closed-loop process; therefore, cloud-edge-end-human collaborative closed-loop intelligent regulation and control management with individualized nerve regulation and control and compliance safety considered is formed.

The application is based on a multi-channel brain electrical signal acquisition system of auditory evoked potential: after receiving the brain electrical signal acquisition instruction through the communication circuit, the control circuit controls to send a trigger signal to the audio generation circuit, and the audio generation circuit generates an audio signal based on the audio source obtained through the audio source interface; the audio driving circuit generates an audio driving signal containing the audio signal based on the audio signal, and the control circuit controls the audio driving circuit to output the audio driving signal of the set time length through the earphone interface, so that the earphone outputs the sound stimulation to act on the collector; the audio driving circuit generates a synchronization signal based on the audio driving signal and transmits it to the signal acquisition circuit, and the signal acquisition circuit acquires the multi-channel brain electrical signals of multiple brain electrical electrodes through the signal acquisition interface and transmits the multi-channel brain electrical signals to the control circuit; the control circuit stores the multi-channel brain electrical signals in the storage circuit and uploads them to the upper computer through the communication circuit; the control circuit controls the system operation indication circuit to light up when the system operates normally.

The application discloses a kind of induced mood pulse sound feature screening method, belong to cognitive neuroscientific technology field, solve the problem of lack of effective screening in prior art mood pulse sound feature.A kind of induced mood pulse sound feature screening method, the method comprises: under the condition of subject within experiment, according to the scene of inducing mood, set multiple pulse sounds;The independent variable of the pulse sound includes sound frequency, repetition frequency and relative loudness;Different sound frequency, repetition frequency and relative loudness are cross designed, form multiple sound stimuli;Using multiple sound stimuli, a plurality of subjects are experimented respectively;And the physiological signal of each subject under each sound stimulus, emotional valence score and arousal degree score are acquired;Based on the physiological signal of all subjects under all sound stimuli, emotional valence score and arousal degree score, the feature screening result of corresponding induced mood pulse sound is obtained.

The application provides a sound stimulation-brain electrical response closed-loop analysis system and method, relates to the technical field of brain electrical data analysis, and comprises the following steps: obtaining real-time brain electrical data under sound stimulation based on a standardized interface, and performing artifact removal and data standardization operations to obtain standard brain electrical data; performing response latency analysis on the standard brain electrical data to obtain response latency data; performing response significance analysis on the standard brain electrical data to obtain response significance data; extracting an abnormal response event set from the standard brain electrical data, and performing context feature modeling and abnormal root cause analysis on the abnormal response event set based on the response latency data and the response significance data to obtain abnormal root cause data; and generating a brain electrical response analysis graph interface corresponding to the response latency data, the response significance data and the abnormal root cause data based on neural signal analysis logic, and visually displaying the brain electrical response analysis graph interface.

The invention relates to the technical field of electroencephalogram signal monitoring and processing, in particular to a user category determination method based on an auditory brainstem reaction normal form and source localization, and the method comprises the following steps: obtaining auditory brainstem reaction data and electroencephalogram data when a target user is stimulated by external sound; based on a feature extraction module, feature extraction is carried out on source estimation data corresponding to the auditory brainstem response data and the electroencephalogram data; performing feature fusion on the basis of the features extracted from the auditory brainstem reaction data and the features extracted from the source estimation data, and determining fusion features; and determining the category of the target user based on the fusion features and a user category prediction model. According to the scheme for carrying out early diagnosis and screening on the autism infants based on the auditory brainstem reaction data and the electroencephalogram data, early autism (ASD) screening of the infants can be finally achieved under the support of the electroencephalogram equipment and auditory brainstem reaction testing.

The application discloses a real-time sound feedback method and equipment based on gait event triggering and belongs to the field of walking cognitive experiment equipment. The equipment comprises a sensing unit, a lower computer, an upper computer and a sound conveying system; the sensing unit comprises a pressure sensor installed in a shoe cover and dispersedly transmitting pressure by a hard foam pad, the heel of a subject rhythmically presses the hard foam pad during walking, and the sensing area of the pressure sensor and the protective film are kept in a detachable pressure contact during the heel strike; the lower computer collects the voltage signal output by the pressure sensor in real time, maps the voltage signal into a standard pressure value and then transmits the standard pressure value to the upper computer in real time, the upper computer analyzes the standard pressure data stream, and when it is determined that the heel strike event occurs, the upper computer immediately controls the sound conveying system to emit sound stimulation with a preset frequency, amplitude and time length. The application provides a multimodal platform interconnection and closed-loop system integration scheme and can provide support for psychology and cognitive neuroscience research.

The utility model discloses a fingertip decompression toy which comprises a base plate, a ring portion and a protruding portion. Wherein the two ends of the finger ring part are connected with the lower surface of the base plate respectively, and the finger ring part and part of the lower surface of the base plate form an annular shape used for being arranged on a finger in a sleeving mode; the lower surface of the base plate is further provided with a groove, and the groove extends towards the upper surface of the base plate and forms the protruding part higher than the upper surface of the base plate. The protruding parts are made of elastic materials. The technical scheme provided by the utility model is small and exquisite in structure and convenient to carry, can be flexibly worn on different fingers, can adjust the attached sound effect when the lug boss is shifted by flexibly setting the sizes of the groove and the lug boss, and provides rich sound stimulation.

The application discloses a kind of feature screening systems for evaluating the emotional interference effect of impulse sound, it is related to cognitive neuroscientific technology field, it solves the problem that there is no effective screening impulse sound characteristics affecting emotion in prior art.The system comprises: sound generation module, for the independent variable of impulse sound is cross designed to form multiple sound stimuli, and multiple subjects are respectively experimented using multiple sound stimuli;Data acquisition module is used to collect experimental data in the process of within-subject experiment;The experimental data include the physiological signal of each subject under each sound stimulus, emotional valence score and arousal score;Data processing module is used to process experimental data in the process of within-subject experiment, and the dependent variable of impulse sound under each sound stimulus is obtained;Data analysis module determines the feature screening result of impulse sound inducing emotion by analyzing the correlation between the independent variable and dependent variable of impulse sound under sound stimulus.

The utility model relates to the technical field of bird hearing perception system research, concretely relates to a bird brain stereoscopic positioning device, is applicable to small and medium size birds, including bottom plate, ear canal positioner, bill angle positioner and bill mouth positioner, the stand is set up on the bottom plate, the ear lever is fixed on the cross arm of stand, the ear canal positioner includes the left and right two parallel setting stands, left and right two ear levers, the stand is in the shape of " " the ear lever includes inner ear lever, outside sleeve lever, top cone and fastening screw, outside sleeve lever can along inner ear lever and carry out the translational sliding, and the position is fixed through fastening screw, the bill angle positioner includes side plate, bill lever and locking screw, the bill mouth positioner includes base, positioning stand, bill mouth positioning head, compression ring, the base can slide horizontally, the utility model has reduced the ear canal blockage and the phenomenon of weak support because of traditional embedded ear lever and single side bill lever, greatly improves the listening range and effect of bird hearing perception system to sound stimulation.

The present invention discloses a neural response data monitoring system and method based on electroencephalogram (EEG) signals. An acquisition device generates an audio signal and controls an audio output module based on the audio signal to output sound stimulation of a set stimulation duration to an object at set stimulation intervals, thereby forming multiple groups of stimulations. A sensor module synchronously acquires original EEG signals of the object of the set collection duration corresponding to each group of sound stimulations and uploads them to a host computer, wherein the set stimulation duration is less than the set collection duration and less than the set stimulation interval. The host computer receives the multiple groups of original EEG signals, performs average signal preprocessing on each group of original EEG signals to obtain corresponding preprocessed EEG signals, performs average processing on the multiple groups of preprocessed EEG signals to obtain auditory brainstem response waveform data including seven positive waves, namely, wave I to wave VII; based on the auditory brainstem response waveform data, peak delay data of wave I to wave VII is acquired; and based on the peak delay data of wave I to wave VII, the neural response data of the object is acquired.

This invention discloses a hearing screening and tinnitus assessment method based on multi-frequency cross-analysis, specifically relating to the fields of hearing testing and neural information processing technology. It constructs an initial hearing vector in the individual frequency domain, generates a deviation feature vector based on a standard population database, extracts a set of abnormal frequency bands, and constructs a frequency domain focusing model. Multiple-intensity sound stimulation is applied to the abnormal frequency bands, and neural response parameter sequences are collected. Further cross-spectral analysis is performed to construct an individualized tinnitus resonance map, and the dominant frequency features and response intensity are extracted. Combined with subjective tinnitus scores, a tinnitus risk index is calculated, and a screening conclusion is output. This invention can achieve objective, quantitative, and spectral-level tinnitus identification, improving screening accuracy and clinical applicability.

The invention discloses a hearing aid and rhythm sound stimulation device based on dual-channel fusion and a control method, and the device comprises a microphone array, an analog-to-digital conversion module, a Bluetooth receiving module, an audio switching and sampling rate conversion module (ASRC), a digital signal processor (DSP), a power amplification module, and a central control unit. A Bluetooth acoustic stimulation signal injection channel is arranged between a microphone input of the hearing aid and a DSP (digital signal processor), and is divided into two paths through ASRC: one path is a Bypass Path, and a Bluetooth acoustic stimulation signal is directly output to a programmable gain amplification and amplitude limiting module and a power amplifier module; and the other path is a DSP fusion path, and the Bluetooth acoustic stimulation signal and the microphone signal are subjected to weighted fusion in the DSP. According to the hearing aid and rhythm sound stimulation device based on dual-channel fusion and the control method, a hardware-level dual-channel structure and an AI self-adaptive control algorithm are introduced into a hearing aid system, low-delay, high-fidelity and multi-mode switchable hearing compensation and nerve regulation are achieved, and the hearing aid and rhythm sound stimulation device has the low-delay (lt, 3ms), high-fidelity and multi-mode intelligent switching capacity.

The invention discloses a non-invasive human sleep nerve regulation and control method and a non-invasive human sleep nerve regulation and control system. The method comprises the following steps: acquiring a first physiological signal of a user, and performing real-time sleep staging on the user to judge a deep sleep stage of the user; on the basis of a sleep staging result, when the user is in a deep sleep state, slow wave power detection is carried out through the second physiological signal; the phase angle of the slow wave is calculated according to the slow wave state, so that tACS electrical stimulation is carried out when the phase angle meets a preset condition; after the tACS electrical stimulation is carried out for a period of time, a third physiological signal of the user is obtained, and the physiological active state of the user is obtained by analyzing the third physiological signal; and when the physiological active state is an uplink state, performing TMR sound stimulation. Therefore, through mutual cooperation of tACS electrical stimulation and TMR sound stimulation, non-invasive nerve regulation and control on the user are jointly realized, and the nerve regulation and control effect on sleep is improved.

A muscle strength improvement device 1 is disclosed that generates a sound stimulus to improve muscle strength. The frequency of the sound stimulus changes over time.

The invention discloses a plant acousto-optic synergistic growth promotion control device, and relates to the technical field of hybrid intelligent automatic control, the device comprises a spectrum driving module, a photoperiod controller, an acoustic execution array, a sensing acquisition module and a calculation and control module electrically connected with the above modules; the calculation and control module is configured to execute a cooperative growth promotion control flow. Phase coupling of acoustic stimulation and spectrum regulation and control is achieved in the same system, a low-peak-value multi-tone detection sequence based on blue noise Poisson disc sampling and Schroeder multi-tone phase distribution is established, and a directional sound field is generated through combined solution of a multi-channel cross-spectrum square matrix and a directional vector table. And a phase reset sequence with the minimum duration is formed by combining a phase response curve mapping table matched with the crop growth rhythm, so that the sound stimulation and the spectrum formula are synchronized in the time domain and the phase.

The application discloses a non-invasive human sleep nerve regulation method and system. The method comprises the following steps: acquiring a first physiological signal of a user, performing real-time sleep staging on the user to determine a deep sleep stage of the user; based on the result of the sleep staging, detecting slow wave power through a second physiological signal when the user is in the deep sleep state; calculating a phase angle of the slow wave according to the slow wave state, so as to perform tACS electric stimulation when the phase angle meets a preset condition; after a period of tACS electric stimulation, acquiring a third physiological signal of the user, and acquiring a physiological active state of the user by analyzing the third physiological signal; and when the physiological active state is an uplink state, performing TMR sound stimulation. Thus, through mutual cooperation of the tACS electric stimulation and the TMR sound stimulation, non-invasive nerve regulation is realized on the user, and the nerve regulation effect on sleep is improved.

The invention provides a method for regulating and controlling fruit quality based on sound waves. According to the method, fruits are stimulated through a sound wave environment with set frequency and sound pressure intensity, and the ripening process and commodity of the fruits are adjusted. Different from existing continuous sound wave treatment, the intermittent circulation type sound wave mode is introduced for the first time, dynamic balance of sound stimulation and self-adjustment of picked fruits is achieved through periodic sound wave starting and pausing, and quality deterioration is avoided. Meanwhile, ethylene fumigation treatment is coupled, and synergistic release of ethylene is achieved through an ethylene controlled release agent in the sound wave treatment process. The method does not need heating or chemical addition, has the advantages of being non-thermal, non-invasive, green, environmentally friendly and the like, is particularly suitable for postharvest regulation and control of fruits sensitive in flavor and poor in heat resistance, and has a good application prospect.

The utility model provides a zebra fish listening function testing device which comprises a box body, a light source assembly, an observation assembly and an image acquisition assembly, the light source assembly, the observation assembly and the image acquisition assembly are arranged in the box body from bottom to top, and the observation assembly comprises a culture solution container and a zebra fish observation container; the culture solution container is arranged above the light source assembly, and the bottom of the culture solution container is of a light-permeable structure; the observation container is arranged in the culture solution container and is opposite to the bottom of the culture solution container at an interval; the permeable structure is used for limiting passing of zebra fish and allowing the culture solution in the culture solution container to pass; a sound production assembly is also arranged in the culture solution container; the image acquisition assembly is used for acquiring motion information of the zebra fish in the observation container. The observation assembly of the double-layer structure can replace experiment objects or increase or decrease water levels at any time, and the flexibility of the experiment device is improved. The test device can realize research on the influence of sound stimulation on the circadian rhythm; and the image acquisition assembly automatically acquires zebra fish image information, so that the accuracy of the testing device is improved.

The utility model discloses a mouse cage with a muscle strength testing function, which relates to the technical field of muscle strength testing and comprises a rat and mouse holding power instrument, a control panel is arranged on the outer surface of the rat and mouse holding power instrument, and a connecting rod is mounted at the connecting end of the rat and mouse holding power instrument. And an auxiliary mechanism connected with the connecting rod is arranged at the upper part of the rat and mouse holding power instrument. By means of mutual cooperation of the adjusting assembly, the luring assembly and the stimulating assembly, activity space of rats and mice can be conveniently adjusted according to requirements, food is stored in the luring assembly to luring the mice to move forwards, and if the mice run backwards without being attracted by the food, the mice can be attracted to move forwards. When the mouse is used for mouse muscle force testing, current stimulation is carried out on the buttocks of the mouse through the stimulation assembly under the condition that the life safety of the mouse is not harmed, meanwhile, strong light and sound stimulation is carried out on the mouse, the mouse is promoted to move forwards, an experimenter pulls the tail of the mouse, and the device is only used for mouse muscle force testing experiments.

The embodiment of the present disclosure provides a non-invasive brain-computer interface system based on earphone real-time electroencephalogram monitoring-auditory stimulation, and relates to the technical field of neural engineering. The system comprises an in-ear earphone device and an external control device. The in-ear earphone device is used for collecting the brain wave signals of a user, transmitting the brain wave signals to the external control device, generating a sound stimulation signal based on a sound stimulation trigger instruction, and delivering the sound stimulation signal to the ear of the user for sound stimulation. The external control device is used for detecting whether there is a characteristic sharp-slow wave signal corresponding to absence epilepsy attack in the brain wave signals. When the characteristic sharp-slow wave signal corresponding to the absence epilepsy attack is detected, the target sharp-slow wave of the brain wave signals is extracted, a sound stimulation trigger instruction is generated based on the sharp wave component of the target sharp-slow wave, and the stimulation trigger instruction is transmitted to the in-ear earphone device. Real-time and accurate monitoring and non-invasive closed-loop intervention of absence epilepsy attack can be realized, the system has high safety, and is portable and comfortable.

The invention discloses an ear vagus nerve acoustoelectric dual stimulation system and method, and relates to the technical field of nerve stimulation medical treatment. The objective of the invention is to solve the technical problems of limited autonomic nerve regulation effect, insufficient cardiovascular disease prevention and treatment efficiency, easy generation of nerve adaptation due to long-term stimulation, poor regulation and control precision and the like in the existing ear vagus nerve single electrical stimulation mode. The system comprises an electrical stimulation module, a sound stimulation module, a control module, an electrode, a sound stimulation probe, a power supply module and a parameter input module, the control module cooperatively regulates and controls all the modules, and the electrodes and the sound stimulation probe output electrical stimulation and sound stimulation respectively. According to the method, acoustic-electric dual synergistic stimulation of the ear vagus nerves is realized by cooperatively regulating and controlling stimulation parameters. The acousto-electric synergistic interaction is utilized, the autonomic nerve regulation and control ability is enhanced, the physiological index regulation precision is improved, related cardiovascular diseases are effectively prevented and treated, the advantages of being high in safety, wide in adaptability, stable in regulation, convenient and fast to operate and capable of being used for a long time are achieved, and the method can be applied to clinical prevention and treatment, rehabilitation treatment and family health management scenes.

The present application provides an electroencephalogram sound stimulation evaluation prediction and adaptive output method and system, which is based on an individual-group bidirectional migration collaborative mechanism of shared feature space and distribution alignment constraint to fuse individual specificity and group commonality knowledge, forming a mechanism to overcome the individual differences of electroencephalogram; the method also uses an adaptive decision fusion mechanism based on prediction uncertainty evaluation to ensure output stability when the prediction model reliability fluctuates, and a model dynamic online updating mechanism based on concept drift detection to adapt the prediction model to the long-term changes of the user state, forming a mechanism to improve accuracy and robustness; the present application can effectively overcome the individual differences of electroencephalogram, realize high-precision system prediction and output, and has robustness.

The invention relates to the field of multi-mode resonance, in particular to a target object data acquisition system based on photoacoustic magnetic vibration wave resonance, and the system comprises a data acquisition module which is used for obtaining neural response data when a target object receives single stimulation; the nerve response relation generation module is used for acquiring a nerve response relation stimulated by the opto-acoustic magnetic vibration waves; the mismatch result generation module is used for calculating a starting time mismatch component, a stimulation intensity mismatch component and a continuous coverage mismatch component of the photoacoustic magnetic vibration wave stimulation to form a mismatch result of the photoacoustic magnetic vibration wave stimulation; the differential compensation control parameter set generation module is used for generating a differential compensation control parameter set; and the multi-mode collaborative stimulation output module is used for performing collaborative control on light stimulation, sound stimulation, magnetic stimulation and mechanical vibration stimulation to form light-sound-magnetic vibration wave resonance stimulation. According to the system, effective resonance of different stimuli is realized, and the collaborative perception ability and nerve response stability of a target object to multi-modal stimuli are enhanced.

The invention belongs to the technical field of sleep regulation and control, and aims to provide a sleep regulation and control method and system based on closed-loop sound stimulation. Through phase tracking and phase compensation, the slow wave rising state can be accurately locked, millisecond-level synchronization of sound stimulation and brain slow wave oscillation can be achieved, compared with a traditional scheme only based on amplitude triggering, the physiological matching performance of sound stimulation can be remarkably improved, and the problem that stimulation and endogenous rhythm are not synchronous is fundamentally solved. According to the invention, slow wave phase locking can be realized, sound stimulation can be applied to a user at an optimal phase point, delay compensation capability is provided, and accurate control of sleep regulation can be realized.

The invention belongs to the field of multi-brain-region transcranial magnetic stimulation equipment, and particularly relates to foldable multi-brain-region transcranial magnetic stimulation equipment and an anti-interference method thereof.The multi-brain-region transcranial magnetic stimulation equipment comprises an upper cover and a lower cover and further comprises a folding mechanism used for connecting the upper cover and the lower cover; a TMS coil, a binaural beat loudspeaker module and an operation interface are integrated in the upper cover, the TMS coil is fixedly installed in the center area of an inner cavity of the upper cover, and the TMS coil is used for generating a focusing magnetic field penetrating through the skull. The double design of spatial separation and independent shielding is adopted, it is ensured that audio signals transmitted to the binaural beat loudspeaker module are pure and free of noise, clear and stable binaural beat sound stimulation is output, and the spatial position of the TMS coil is adjustable relative to the head of a user.

The invention discloses an intelligent nerve regulation and control method based on acoustic-magnetic pairing, and the method comprises the steps: enabling sound stimulation and transcranial magnetic stimulation to form paired stimulation, and introducing real-time motor evoked potential feedback; a closed-loop process from baseline acquisition and TMS intensity parameter determination, paired associated stimulation delay parameter optimization, personalized treatment scheme implementation, and curative effect evaluation and verification of RMT changes is constructed. The nerve excitability is dynamically monitored by using the objective electrophysiological indexes, so that the stimulation parameters are always personalized, the regulation and control precision is remarkably improved, and the traceability and quantification of the curative effect are ensured. According to the intelligent nerve regulation and control method based on acoustic-magnetic pairing provided by the invention, the target nerve pathway can be effectively regulated and controlled by reasonably designing paired association and delay parameters of sound stimulation and TMS stimulation, nerve function reconstruction and rehabilitation treatment are realized, and the method has the advantages of simplicity and convenience in operation, automatic parameter adjustment, safety and reliability.

The wearable electroencephalogram monitoring device comprises an electroencephalogram cap, an earphone and an electroencephalogram collecting device, a plurality of electroencephalogram electrodes are arranged on the electroencephalogram cap, and the electroencephalogram collecting device is installed on the electroencephalogram cap and comprises a shell. A power supply interface, a power supply circuit, a sound source interface, an audio generation circuit, an audio drive circuit, an earphone interface, a signal acquisition interface, a signal acquisition circuit, a control circuit, a storage circuit, an operation indication circuit and a communication circuit are integrated in the shell; the electroencephalogram acquisition assembly and the sound stimulation assembly are integrated to form the electroencephalogram acquisition device, the electroencephalogram stimulation device is installed on the electroencephalogram cap, generation of sound stimulation and acquisition of signals are facilitated, occupied space is small, the electroencephalogram acquisition device is neat and orderly, circuits in the electroencephalogram acquisition device are optimally designed, and the electroencephalogram acquisition device is convenient to use. And multi-channel electroencephalogram signals can be collected more accurately.

Timer comprising a sound generator, at least one sound-stimulating element, a drive and a disk moved by it, wherein the moving disk has at least one detent surface for temporarily holding the at least one sound-stimulating element in position, wherein the timer has at least one deflection element relative to which the disk moves, such that the deflection element exerts a force on the at least one sound-stimulating element at a certain time, which sets the sound-stimulating element in motion towards the sound generator and finally causes it to sound.