CN110464344A - The method for collecting the device of eeg signal acquisition and music and its playing music - Google Patents

Abstract

The present application is applicable to the field of brain wave processing, and provides a device for collecting brain electrical signals and playing music and a method for playing music. The device includes a control module and an EEG signal acquisition module, a wireless transmission module, an audio decoding module, a prompt module and a storage module that are electrically connected to the control module respectively; Or three active electrodes, a first reference electrode placed at one of the mastoid positions of the human body for potential reference, and an analog signal acquisition front-end circuit module electrically connected to the active electrode and the first reference electrode respectively. The present application can improve the accuracy of the emotion judgment of the tested user to a certain extent. Users can use the device of the present application to collect EEG signals at home, offices and other non-medical institutions, and select corresponding music to play and enjoy by themselves in combination with their recent discomfort symptoms and negative emotions.

Description

Device for collecting brain electrical signals and playing music and method for playing music

technical field

The present application belongs to the field of brain wave processing, and in particular relates to a device for collecting brain electrical signals and playing music and a method for playing music.

Background technique

EEG signal is a special and extremely complex bioelectrical signal, which contains abundant physiological and pathological information, and is an important means of brain research, physiological research, and clinical brain disease research. Since brain waves were recorded, the way they were collected has also changed with the advancement of technology. Due to the problems of traditional EEG signal acquisition equipment used in clinics, such as large size, difficult handling, cumbersome use of electrode caps, high cost, and immovability of subjects, portable EEG acquisition equipment has gradually emerged.

At present, the consumer-grade portable EEG acquisition devices emerging on the market generally have the following problems:

Most portable EEG acquisition equipment adopts the design of single-channel unipolar lead when collecting EEG signals. When the EEG signal is collected by the single-channel unipolar lead method, the electrode touching the scalp or forehead skin is the active electrode, and the electrode placed on the earlobe is the reference electrode, and the brain potential changes are obtained by recording the potential difference between the active electrode and the reference electrode. the absolute value of . The brainwave obtained by this method has less doping, and the waveform amplitude is high and stable. However, because the acquisition channel is a single channel, the complete waveform of different brain regions cannot be obtained at the same time, and there is a lack of comparison and interconnection of the basic characteristics of the waveforms in different brain regions. , thereby reducing the accuracy of user emotional or cognitive judgments.

Music is essentially sound waves vibrating with a certain frequency. When people listen to suitable music, the inherent vibration frequencies of the human body, such as heart rate, respiration, pulse, etc., will physically resonate with the music, and music can change the response of the autonomic nervous system in the human thalamus to stimulation, so music stimulates It can induce emotions as well as regulate and improve emotions. With the popularization of this cognition, in the middle of the 20th century, an interdisciplinary applied discipline, music therapy, was created in Europe and the United States. It involves a wide range of disciplines and integrates various disciplines and practices such as music, medicine, and psychology. It is one of the psychotherapies with strong application. Music therapy emphasizes that emotions determine cognition, and is mostly used in the treatment of health care and physical and mental diseases. It mainly uses the appeal of music to calm the negative emotions of patients, divert their attention, improve their language ability, memory, and increase sociality, so as to change the patient's psychological state, eliminate the patient's negative emotions, and allow the patient to establish a positive attitude. healthy lifestyle.

At present, music therapy is mostly based on diagnosis. Music therapists design and provide functional music for treatment according to the examination report of the recipient. The recipient needs to play it in their own life according to the instructions. Functional music, and regular contact with a music therapist for instruction or music adjustment. However, the existing software related to music therapy and hardware related to emotion monitoring are mostly in a separate state. The recipients need to obtain their own emotional feedback through professional instrument testing or scale analysis in music therapists or related medical institutions. The recipient needs to be in music therapy for a long time in their lives and cannot stay with the music therapist for a long time or before sleep. After a treatment, recipients cannot get timely feedback on their current emotions, so as to judge the progress and effect of treatment. They need to go to the relevant medical institution next time to know the relevant treatment feedback. The emergence of this situation also caused a certain lag in the update of the music therapist's treatment plan.

SUMMARY OF THE INVENTION

The purpose of this application is to provide a device for collecting EEG signals and playing music, and a method for collecting EEG signals and a method for playing music, aiming to solve the existing software related to music therapy and hardware related to emotion monitoring. Most of them are in a separated state, which makes the update of the music therapist’s treatment plan with a certain lag; and when the portable EEG acquisition device collects EEG signals, the single-channel unipolar lead is used, which reduces the accuracy of the user’s emotional or cognitive judgment. sexual issues.

In the first aspect, the present application provides a device for collecting EEG signals and playing music. The device includes a control module, an EEG signal acquisition module, a wireless transmission module, an audio decoding module, a prompt, and a control module that are electrically connected to the control module. module and storage module; the device also includes a wireless earphone wirelessly connected to the wireless transmission module and/or an audio output interface electrically connected to the control module for connecting a wired earphone; the EEG signal acquisition module includes a device for placing on the forehead of the human body Two or three active electrodes of the lobe, a first reference electrode for potential reference placed at one of the mastoid positions of the human body, and an analog signal acquisition front-end circuit module electrically connected to the active electrode and the first reference electrode respectively, the analog signal The acquisition front-end circuit module is electrically connected with the control module;

The control module is used to control the EEG signal acquisition module to collect the EEG signal and transmit it to the host computer through the wireless transmission module, so that the host computer can determine the prediction result of negative emotions according to the EEG signal, and determine the type of music corresponding to the prediction result. , and receive music or music-related information of the type corresponding to the prediction result sent by the host computer through the wireless transmission module, and then control the audio decoding module to play the music of the type corresponding to the prediction result.

In a second aspect, the present application provides a method for collecting EEG signals by a device for collecting EEG signals and playing music as described in the first aspect, the method comprising:

S101. After the device for collecting EEG signals and playing music is connected to the host computer, and the user is in a resting state, the device collects the first EEG signal of the user within a first preset time, and sends it to the host computer for storage and analytical processing;

S102. After a second preset time interval, the device plays at least one segment of neutral audio, at least one segment of negative audio, and at least one segment of positive audio, respectively, and a third preset time interval between the two audio segments is used to distinguish the audio frequency of each segment. start and end;

S103, in the process of playing the audio, the device collects the second EEG signal of the user under the audio stimulation state, and sends it to the host computer for storage and analysis processing, and the host computer marks the second EEG according to the playback sequence of the audio and the playback time. The start time and end time corresponding to each audio segment in the signal, the host computer performs noise reduction processing on the first EEG signal and the second EEG signal, and extracts the EEG signal features related to emotions, and the EEG signal features related to emotions are extracted. Input the prediction model for predicting negative emotions, and after the calculation of the prediction model, output the prediction results of negative emotions in real time.

In a third aspect, the present application provides a method for playing music by a device for collecting EEG signals and for playing music as described in the first aspect, the method comprising:

S201. After the device for collecting EEG signals and playing music is connected to the host computer, and the user is in a resting state, the device collects the first EEG signal of the user within the first preset time, and sends it to the host computer for storage and analytical processing;

S202. After a second preset time interval, the device plays at least one segment of neutral audio, at least one segment of negative audio and at least one segment of positive audio, respectively, and the third preset time interval between the two audio segments is used to distinguish the audio frequency of each segment. start and end;

S203, in the process of playing the audio, the device collects the second EEG signal of the user in the audio stimulation state, and sends it to the host computer for storage and analysis processing, and the host computer marks the second EEG according to the playback sequence of the audio and the playback time. The start time and end time corresponding to each audio segment in the signal, the host computer performs noise reduction processing on the first EEG signal and the second EEG signal, and extracts the EEG signal features related to emotions, and the EEG signal features related to emotions are extracted. Input the prediction model for predicting negative emotions, and output the prediction results of negative emotions in real time after the calculation of the prediction model;

S204. The device receives music or music-related information of the type corresponding to the prediction result sent by the host computer, and plays the music of the type corresponding to the prediction result, and the music or music-related information of the type corresponding to the prediction result is generated by The host computer determines according to the prediction result of negative emotion, or determines by combining the prediction result of negative emotion and the discomfort symptoms selected by the user.

In this application, since the device for collecting EEG signals and playing music includes an EEG signal collection module, a wireless transmission module and an audio decoding module that are electrically connected to the control module, the EEG signal collection module includes an EEG signal collection module for placing on the forehead of the human body. The two or three active electrodes of the lobe and the first reference electrode for potential reference placed at one of the mastoid positions of the human body, therefore, the device for collecting EEG signals and playing music can be related to emotional cognition. The complete EEG waveforms of two or three prefrontal EEG signal acquisition points related to the prefrontal lobe can improve the accuracy of the user's emotional judgment to a certain extent by analyzing the basic characteristics of multiple waveforms and their interconnections. Spend.

In addition, because the control module controls the EEG signal acquisition module to collect the EEG signal, and transmits it to the host computer through the wireless transmission module, so that the host computer can determine the prediction result of negative emotions according to the EEG signal, and determine the type corresponding to the prediction result. music, and receive music or music-related information of the type corresponding to the prediction result sent by the host computer through the wireless transmission module, and then control the audio decoding module to play the music of the type corresponding to the prediction result. Therefore, with the device for collecting EEG signals and playing music, users can use the device for collecting EEG signals and playing music to collect EEG signals by themselves in non-medical institutions such as homes and offices. Play and enjoy music corresponding to their recent discomfort symptoms and negative emotions. Appropriate music can interfere with their cognitive behavior and mental health, improve and maintain their cognition and emotions, reduce anxiety and depression, and maintain memory. , to increase positive emotions and self-expression, so as to soothe the body and mind and relieve negative emotions.

Description of drawings

FIG. 1 is a structural block diagram of an apparatus for collecting EEG signals and playing music provided by Embodiment 1 of the present application.

FIG. 2 is a schematic diagram of an EEG waveform collected by the tested user in a resting state using the device for collecting EEG signals and playing music provided by the first embodiment of the present application.

FIG. 3 is a schematic diagram of an EEG waveform collected by the tested user using the device for collecting EEG signals and playing music provided by the first embodiment of the present application in a state of music stimulation.

Figure 4 is an interface that prompts the percentage of negative emotions.

FIG. 5 is a flowchart of a method for collecting EEG signals provided by the apparatus for collecting EEG signals and playing music provided in Embodiment 2 of the present application.

FIG. 6 is a flowchart of a method for playing music by an apparatus for collecting EEG signals and playing music provided by Embodiment 3 of the present application.

Detailed ways

In order to make the objectives, technical solutions and beneficial effects of the present application clearer, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

In order to illustrate the technical solutions described in the present application, the following specific embodiments are used for description.

Example 1:

Referring to FIG. 1 , the apparatus for collecting EEG signals and playing music provided in the first embodiment of the present application includes: a control module 11 , an EEG signal collection module 12 electrically connected to the control module 11 , a wireless transmission module 13 , and an audio decoding module Module 14, prompt module 15 and storage module 16; the device for collecting EEG signals and playing music also includes a wireless earphone 17 wirelessly connected to the wireless transmission module 13 and/or a wired earphone electrically connected to the control module 11. Audio output interface 18; EEG signal acquisition module 12 includes two or three action electrodes 121 for placing on the frontal lobe of the human body, a first reference electrode 122 for potential reference placed on one of the mastoid positions of the human body, and An analog signal acquisition front-end circuit module 123 electrically connected to the active electrode 121 and the first reference electrode 122, the analog signal acquisition front-end circuit module 123 is electrically connected to the control module 11; the storage module 16 is used for storing music and collected EEG signal data The control module 11 is used to control the EEG signal acquisition module 12 to collect the EEG signal, and transmit it to the host computer through the wireless transmission module 13, so that the host computer determines the prediction result of negative emotions according to the EEG signal, and determines the prediction result. music of the corresponding type, and receive the music or music-related information of the type corresponding to the prediction result sent by the host computer through the wireless transmission module 13, and then control the audio decoding module 14 to play the music of the type corresponding to the prediction result.

In the first embodiment of the present application, the device for collecting EEG signals and playing music may further include a second reference electrode placed at another mastoid position of the human body for removing common mode interference. The second reference electrode is connected to the analog signal collecting The front-end circuit module 123 is electrically connected.

The apparatus for collecting EEG signals and playing music may further include an ESD protection circuit electrically connected to the front-end circuit module 123 for collecting analog signals. The ESD protection circuit can protect the components in the circuit when there is electrostatic discharge, avoid sudden and potential damage to the hardware circuit, and prolong the service life of the equipment.

The device for collecting EEG signals and playing music may also include a transmission interface that is electrically connected to the control module 11, such as a Type-C interface, a USB interface, etc., which can be connected to a U disk, so that users can directly collect and play music from the EEG signals. Data is stored in, transferred out, etc. in the playback device.

The device for collecting brain electrical signals and playing music may also include an attitude detection module (such as a three-dimensional electronic gyroscope, etc.) and a vibration motor electrically connected to the control module 11. The attitude detection module is used to detect the posture of the human head and cooperate with the vibration motor to realize For the function of correcting wearing errors, when the angle detected by the attitude detection module deviates greatly, it means that the user is not wearing it correctly, so the control module 11 controls the vibration motor to send out a slight vibration prompt.

The device for collecting EEG signals and playing music may further include a power-on button and a power-off button electrically connected to the control module 11 .

The wireless earphone may be a Bluetooth earphone, such as a wireless Bluetooth bone conduction earphone and the like. The wireless bluetooth bone conduction earphone can be connected with the wireless transmission module 13 via bluetooth, so that the user can enjoy music without the earphone in the ear, reduce eardrum damage, be safer and healthier, and make the music therapy process more comfortable and humanized.

The prompting module 15 may be an indicator light, such as a three-color status indicator light. After the user presses the power button, the device is turned on, and the device lights up with a green indicator light; when the device is successfully paired and data is transmitted, the indicator light turns blue and flashes in a cycle of 3s; after pressing the power button, the device shuts down and the indicator light extinguish.

In the first embodiment of the present application, the two active electrodes 121 are placed at any two positions of FP1, FP2, and FPZ of the prefrontal lobe, and the three active electrodes 121 are respectively placed at the positions of FP1, FP2, and FPZ of the prefrontal lobe.

The storage module 16 may be an SD card or the like. When the user does not have the supporting mobile APP or PC software, he can take out the storage module and export the required data to the PC through the card reader. The user can also perform operations such as clearing or downloading the storage module through the PC.

The analog signal acquisition front-end circuit module 123 can specifically use an integrated multi-channel signal acquisition front-end chip. The integrated multi-channel signal acquisition front-end chip integrates a differential amplifier, a filter, an ADC driver, a high-level ADC and a right leg drive circuit, and has a volume The advantages of small size and good stability meet the design requirements of portable and small size.

The wireless transmission module 13 may be a Bluetooth module, a WIFI module, a Zigbee module, or the like. The device for collecting EEG signals and playing music provided in the first embodiment of the present application can perform data communication with a host computer (eg, a mobile phone, a PC, a tablet computer, etc.) through the wireless transmission module 13 .

The specific workflow of the device for collecting EEG signals and playing music provided by the first embodiment of the present application is as follows:

According to the size of his head, the user wears the device for collecting EEG signals and playing music on his head, and ensures that the three active electrodes on the forehead are in contact with the skin on the front of the forehead, and the first reference electrode and the second reference electrode are close to Two mastoid locations. After pressing the power button, the indicator lights up and detects whether the user is wearing the device that collects EEG signals and music playback correctly. The module controls the vibration motor to send out a slight vibration prompt, and the user can adjust it until the vibration stops. After the user successfully connects the host computer and the device through Bluetooth, the device that collects EEG signals and music playback completes the EEG signal acquisition by prompting the correct use of the host computer. In the process of EEG signal acquisition, the EEG signals collected by the three active electrodes, the first reference electrode and the second reference electrode will be filtered, amplified and AD converted through the analog signal acquisition front-end circuit module, and the obtained EEG digital signal It is transmitted to the control module through the serial port. During the data transmission process, the indicator light will flash at a certain period, which is convenient for the user to know the state of the device. After the EEG digital signal passes through the control module, it will be transmitted to the host computer through Bluetooth. The host computer performs digital filtering and other noise reduction preprocessing on the EEG signal and saves it. Then the useful features in the denoised signal are extracted from the background, and then the data will be input into the prediction model for predicting negative emotions. After the calculation of the prediction model, the prediction results of negative emotions, such as the percentage of negative emotions, are output in real time. The storage module of the device for collecting EEG signals and playing music stores a lot of music that is beneficial for the user to relax, relieve bad symptoms, and establish a positive attitude. After viewing the predicted results of negative emotions, users can judge their own symptoms through the common symptoms and negative emotions provided in the host computer. If the percentage of negative emotions is large, it proves that the subjects are in a state of anxiety, irritability, depression and other negative emotions. , the user can choose to play the corresponding type of music, of course, the host computer can automatically judge the user's symptoms according to the negative emotion prediction result, and then automatically play the corresponding type of music. The user can wirelessly connect the wireless headset with the device that collects EEG signals and music playback, and controls the music playback by operating the function buttons of the upper computer, so as to relax the mind and relieve anxiety and depression. After the device for collecting EEG signals and playing music is completed, press the power-off button, the indicator light will be off, and the connection with the host computer will be disconnected at the same time.

Compared with the traditional EEG equipment used in hospitals, the device for collecting EEG signals and playing music provided by the present application has the advantages of low cost, simple operation, good user experience, and can better ensure the collected EEG signals. quality. And can be combined with music therapy, can effectively relieve the patient's depression, anxiety, to eliminate psychological barriers, restore or improve physical and mental health purposes. The user can see the EEG waveform of the tested user in the resting state on the display interface of the host computer, as shown in Figure 2, and the EEG in the state of music stimulation as shown in Figure 3.

In Figure 2, the first channel is the EEG collected at the FP1 position, the power spectrum of the signal is on the right, the second channel shows the signal at the FPZ position, and the third channel is the FP2 position. It can be seen from Figure 2 that most of the collected signals have an amplitude of about 10uV, and the frequency is concentrated in 10-30HZ. The most obvious beta waves in the frontal and temporal regions have an amplitude of 5-20uV and a frequency of 18-30HZ. After matching with the collected signals, it can be seen that the EEG signals of better quality can be collected during normal work.

By analyzing the EEG signals of the tested users in the resting state and stimulated by relevant music, the emotional state of the tested users can be judged, and the percentage of negative emotions can be given for reference. Figure 4 shows the software interface giving the negative sentiment percentage.

Embodiment 2:

Normal humans will have different proportions of components in different bands in their EEG signals due to their different emotions. Relevant studies have shown that people have more alpha wave components when they are in a calm mood, more β wave components when they are emotionally excited or active thinking, and more θ wave components when they are extremely depressed and sad.

Referring to FIG. 5 , the second embodiment of the present application provides a method for collecting EEG signals by a device integrating EEG signal collection and music playback, and the method includes the following steps:

S101. After the device for collecting EEG signals and playing music is connected to the host computer, and the user is in a resting state, the device collects the first EEG signal of the user within a first preset time (for example, 90s, 100s, etc.), And sent to the host computer for storage and analysis;

S102. After a second preset time interval (eg, 0s, 10s, 20s, etc.), the device plays at least one segment of neutral audio, at least one segment of negative audio, and at least one segment of positive audio, respectively, and the two audio segments are separated by a third preset time interval. Set time (such as 6s, 10s, etc.) to distinguish the start and end of each audio segment;

S103, in the process of playing the audio, the device collects the second EEG signal of the user under the audio stimulation state, and sends it to the host computer for storage and analysis processing, and the host computer marks the second EEG according to the playback sequence of the audio and the playback time. The start time and end time corresponding to each audio segment in the signal, the host computer performs noise reduction processing on the first EEG signal and the second EEG signal, and extracts the EEG signal features related to emotions, and the EEG signal features related to emotions are extracted. Input the prediction model for predicting negative emotions, and after the calculation of the prediction model, output the prediction results of negative emotions in real time, such as the percentage of negative emotions.

In the second embodiment of the present application, the positive audio is audio that positively stimulates people's emotions; the negative audio is audio that negatively stimulates people's emotions (for example, decoration sound, chainsaw sound ); the neutral audio is audio with weak stimulation effect on people.

After S103, the method may further include the following steps:

The upper computer uploads the negative emotion prediction result, the first EEG signal and the second EEG signal to the server. Physicians can manage and query the personal information and test records of different patients by logging in to the server, and can also view the user's EEG waveform, which is convenient for secondary scientific research. Physicians do not have to wait for the second visit of the patient to know the patient's subsequent psychological state and the effect of music therapy.

Embodiment three:

Referring to FIG. 6 , the third embodiment of the present application provides a method for playing music by a device integrating EEG signal acquisition and music playback. The method includes the following steps:

S201. After the device for collecting EEG signals and playing music is connected to the host computer, and the user is in a resting state, the device collects the first EEG signal of the user within a first preset time (for example, 90s, 100s, etc.) , and sent to the host computer for storage and analysis;

S202. After a second preset time interval (eg, 0s, 10s, 20s, etc.), the device plays at least one segment of neutral audio, at least one segment of negative audio, and at least one segment of positive audio, respectively, and the two segments of audio are separated by a third preset time. Set time (such as 6s, 10s, etc.) to distinguish the start and end of each audio segment;

S203, in the process of playing the audio, the device collects the second EEG signal of the user in the audio stimulation state, and sends it to the host computer for storage and analysis processing, and the host computer marks the second EEG according to the playback sequence of the audio and the playback time. The start time and end time corresponding to each audio segment in the signal, the host computer performs noise reduction processing on the first EEG signal and the second EEG signal, and extracts the EEG signal features related to emotions, and the EEG signal features related to emotions are extracted. Input the prediction model for predicting negative emotions, and after the calculation of the prediction model, output the prediction results of negative emotions in real time, such as the percentage of negative emotions;

S204. The device receives music or music-related information of the type corresponding to the prediction result sent by the host computer, and plays the music of the type corresponding to the prediction result, and the music or music-related information of the type corresponding to the prediction result is generated by The upper computer determines according to the prediction result of negative emotion, or it can be determined by combining the prediction result of negative emotion and the discomfort symptoms selected by the user.

Wherein, the type of music corresponding to the prediction result may be music with five-element characteristics.

For example, if the user has symptoms such as insomnia, palpitation, chest tightness, etc., as well as chest pain, irritability, etc., the music of the type corresponding to the predicted result is the music for nourishing the heart; the music for nourishing the heart has the components of the sound of fire in the five elements and the feather sound of water , it can replenish water so that the heart fire will not be too strong, and the fire will not be too cold, and users can listen to it before going to bed to help the heart function normally;

If the user has external symptoms such as bitter mouth, dysmenorrhea, ulcers on the edge of the tongue, dry eyes, and easily frightened, emotional irritability, depression, etc., the type of music corresponding to the predicted result is liver-nourishing music, which can be used at night. Play during heavy yin qi period; in liver nourishing music, the metal shang sound element can restrain the excessive wood qi in the human body, and the water feather sound element can well nourish the wood qi, making it soft and smooth;

If the user has symptoms of spleen and stomach discomfort such as abdominal distension, yellow face, fatigue, lip ulcer, or has bad habits such as overeating, excessive taste, excessive thinking, etc., the type of music corresponding to the predicted result is spleen nourishing music, which can be found in Play music for nourishing the spleen during meals; the rhythm of the music for nourishing the spleen is more cheerful and lively, and it contains rapid frequency signs and sounds that can stimulate our spleen and stomach and speed up the digestion and absorption of food;

If the user has symptoms such as throat ulcer pain, cough, nasal congestion, asthma, or smoking, respiratory disease, etc., the music of the type corresponding to the predicted result is a lung-raising track, which can be played in the afternoon when the lungs are the heaviest in the body. Nourishing the lungs; the tunes of the works for nourishing the lungs are relatively high. Among them, the palace sounds that belong to earth can promote lung qi, and the signs that belong to fire can balance lung qi. Long-term treatment can sort out lung qi and relieve symptoms;

If the user often stays up late, drinks alcohol, drinks strong tea, or is overworked, the type of music corresponding to the predicted result is the song for nourishing the kidney, and the song for nourishing the kidney can be played in the morning when the sun gradually rises; The five tones of Gong, Shang and Yu are well matched, the tune is soothing and quiet, and the energy of the five elements can be transported to the kidneys along with the music, making the listener feel refreshed and relaxed.

In this application, since the device for collecting EEG signals and playing music includes an EEG signal collection module, a wireless transmission module and an audio decoding module that are electrically connected to the control module, the EEG signal collection module includes an EEG signal collection module for placing on the forehead of the human body. Two or three active electrodes of the lobe and a first reference electrode for potential reference placed at one of the mastoid positions of the human body. Therefore, the device for collecting EEG signals and playing music according to the present application can obtain the complete EEG waveforms of two or three prefrontal EEG signal collection points related to emotional cognition. The analysis of their interconnectedness can improve the accuracy of the user's emotional judgment to a certain extent.

In addition, because the control module controls the EEG signal acquisition module to collect the EEG signal, and transmits it to the host computer through the wireless transmission module, so that the host computer can determine the prediction result of negative emotions according to the EEG signal, and determine the type corresponding to the prediction result. music, and receive music or music-related information of the type corresponding to the prediction result sent by the host computer through the wireless transmission module, and then control the audio decoding module to play the music of the type corresponding to the prediction result. Therefore, through the device for collecting EEG signals and playing music of the present application, the user.

Non-medical institutions in the art can use the device for collecting EEG signals and playing music to collect EEG signals by themselves at home, offices and other non-medical institutions, and select corresponding music based on their recent discomfort symptoms and negative emotions. Play and enjoy, appropriate music can interfere with their cognitive behavior and mental health, improve and maintain their cognition and mood, reduce anxiety and depression, maintain memory, increase positive emotions and self-expression, so as to soothe the body and mind and alleviate negative The role of emotions. Those of ordinary skill can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, and the storage medium can include : Read Only Memory (ROM, Read Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or CD, etc.

The above descriptions are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection of the present application. within the range.

Claims (10)

1. a device that collects EEG signal collection and music playback, it is characterized in that: described device comprises control module and EEG signal collection module, wireless transmission module, audio decoding module, prompt module and respectively electrically connected with control module. a storage module; the device further includes a wireless earphone wirelessly connected to the wireless transmission module and/or an audio output interface electrically connected to the control module for connecting a wired earphone; the EEG signal acquisition module includes a Two or three active electrodes, a first reference electrode placed at one of the mastoid positions of the human body for potential reference, and an analog signal acquisition front-end circuit module electrically connected to the active electrode and the first reference electrode respectively, the analog signal acquisition front end The circuit module is electrically connected with the control module; The control module is used to control the EEG signal acquisition module to collect the EEG signal and transmit it to the host computer through the wireless transmission module, so that the host computer can determine the prediction result of negative emotions according to the EEG signal, and determine the type of music corresponding to the prediction result. , and receive music or music-related information of the type corresponding to the prediction result sent by the host computer through the wireless transmission module, and then control the audio decoding module to play the music of the type corresponding to the prediction result. 2. The device according to claim 1, wherein the device further comprises a second reference electrode placed at another mastoid position of the human body for removing common mode interference, the second reference electrode and the analog signal acquisition front end The circuit modules are electrically connected. 3 . The device of claim 1 , wherein the device further comprises an ESD protection circuit electrically connected to the analog signal acquisition front-end circuit module. 4 . 4. The device according to claim 1, wherein the device further comprises a transmission interface, a power-on button and a power-off button electrically connected with the control module; The analog signal acquisition front-end circuit module specifically adopts an integrated multi-channel signal acquisition front-end chip. 5 . The device of claim 1 , wherein the device further comprises an attitude detection module and a vibration motor electrically connected with the control module. 6 . 6 . The device according to claim 1 , wherein the two active electrodes are placed at any two positions of FP1 , FP2 and FPZ of the prefrontal lobe, and the three active electrodes are placed on FP1 and FP2 of the prefrontal lobe respectively. 7 . and FPZ location. 7. A method for collecting EEG signals according to any one of claims 1 to 6, wherein the method comprises: S101. After the device for collecting EEG signals and playing music is connected to the host computer, and the user is in a resting state, the device collects the first EEG signal of the user within a first preset time, and sends it to the host computer for storage and analytical processing; S102. After a second preset time interval, the device plays at least one segment of neutral audio, at least one segment of negative audio, and at least one segment of positive audio, respectively, and a third preset time interval between the two audio segments is used to distinguish the audio frequency of each segment. start and end; S103, in the process of playing the audio, the device collects the second EEG signal of the user under the audio stimulation state, and sends it to the host computer for storage and analysis processing, and the host computer marks the second EEG according to the playback sequence of the audio and the playback time. The start time and end time corresponding to each audio segment in the signal, the host computer performs noise reduction processing on the first EEG signal and the second EEG signal, and extracts the EEG signal features related to emotions, and the EEG signal features related to emotions are extracted. Input the prediction model for predicting negative emotions, and after the calculation of the prediction model, output the prediction results of negative emotions in real time. 8. The method of claim 7, wherein the positive audio is audio that positively stimulates human emotions, the negative audio is audio that has negative stimulation to human emotions, and The neutral audio is the audio with weak stimulation effect on people; After S103, the method further includes: The upper computer uploads the negative emotion prediction result, the first EEG signal and the second EEG signal to the server. 9. A method for playing music according to any one of claims 1 to 6, wherein the method comprises: S201. After the device for collecting EEG signals and playing music is connected to the host computer, and the user is in a resting state, the device collects the first EEG signal of the user within the first preset time, and sends it to the host computer for storage and analytical processing; S202. After a second preset time interval, the device plays at least one segment of neutral audio, at least one segment of negative audio and at least one segment of positive audio, respectively, and the third preset time interval between the two audio segments is used to distinguish the audio frequency of each segment. start and end; S203, in the process of playing the audio, the device collects the second EEG signal of the user in the audio stimulation state, and sends it to the host computer for storage and analysis processing, and the host computer marks the second EEG according to the playback sequence of the audio and the playback time. The start time and end time corresponding to each audio segment in the signal, the host computer performs noise reduction processing on the first EEG signal and the second EEG signal, and extracts the EEG signal features related to emotions, and the EEG signal features related to emotions are extracted. Input the prediction model for predicting negative emotions, and output the prediction results of negative emotions in real time after the calculation of the prediction model; S204. The device receives music or music-related information of the type corresponding to the prediction result sent by the host computer, and plays the music of the type corresponding to the prediction result, and the music or music-related information of the type corresponding to the prediction result is generated by The host computer determines according to the prediction result of negative emotion, or determines by combining the prediction result of negative emotion and the discomfort symptoms selected by the user. 10. The method of claim 9, wherein the type of music corresponding to the prediction result is music with five-element characteristics.