A group brain regulation method and device based on multi-modal sensory stimulation

Abstract

The application discloses a group brain regulation method and device based on multi-modal sensory stimulation. The method comprises the following steps: acquiring the inter-brain synchronization baseline level of multiple users; implementing the same-phase auditory, tactile or visual stimulation with specific frequency to the users to manipulate the synchronized neural activity of specific brain regions of the users; acquiring the inter-brain synchronization result of the users again; and providing the users with a visual report reflecting the inter-brain synchronization improvement before and after the group brain regulation according to the inter-brain synchronization result of the users before and after the implementation of the multi-modal sensory stimulation. The application manipulates the synchronism of brain activity by implementing the same-phase sensory stimulation with specific frequency to the users, which makes up for the problems of high cost, complex operation, low user acceptance and limited application of the existing group brain regulation technology based on electric stimulation, and provides a practical means for promoting interpersonal interaction.

Description

Technical Field

[0001] This invention belongs to the field of swarm brain modulation technology, and particularly relates to a swarm brain modulation method and device based on multimodal sensory stimulation. Background Technology

[0002] Social interaction is one of the fundamental activities of human society. Human interaction involves complex social cognition and neural brain activity. In recent years, researchers have used hyperscanning technology—which simultaneously measures the brains of two (or more) individuals—to explore the neural mechanisms behind interpersonal interaction. Numerous studies have found that "inter-brain synchronization" (i.e., the synchronization of brain signals between individuals) occurs during interactions between two or more individuals (such as collaborative learning), and there is a positive correlation between inter-brain synchronization and the effectiveness of interpersonal interaction (i.e., the stronger the inter-brain synchronization, the better the interaction). These studies have deepened our understanding of interpersonal interaction from the perspective of inter-brain synchronization.

[0003] However, most studies have only revealed the relationship between brain-brain synchronization and interpersonal interaction, without clarifying a key question: is brain-brain synchronization a neural mechanism promoting interpersonal interaction or an epiphysiological phenomenon accompanying the interaction process? Recent researchers have conducted in-depth research on this question and made initial progress. Using transcranial alternating current stimulation (tACS) technology to simultaneously stimulate the brain activity of two interacting individuals (i.e., multi-brain stimulation) to manipulate brain-brain synchronization, they found that exogenous manipulation of brain-brain synchronization can promote interpersonal interaction. This research evidence suggests that brain-brain synchronization plays a significant role in promoting interpersonal interaction. However, brain-group modulation technology based on electrical stimulation has several shortcomings, such as high cost, cumbersome operation, and low user acceptance, which also limit the widespread application of this technology. Summary of the Invention

[0004] In order to address the problems existing in the background technology and overcome the limitations of electrostimulation-based swarm brain modulation technology in terms of cost, operability, user acceptance, and scalability, the present invention aims to provide a swarm brain modulation method and device based on multimodal sensory stimulation.

[0005] The technical solution adopted in the method of this invention is as follows:

[0006] I. A group brain modulation method based on multimodal sensory stimulation, comprising the following steps:

[0007] Step S1: First, wear a functional near-infrared spectroscopy device on the heads of multiple users to collect brain activity signals and obtain the baseline level of inter-brainsynchrony.

[0008] Step S2: Apply multimodal sensory stimulation to all users, and then obtain the brain synchronization results of the users after applying multimodal sensory stimulation;

[0009] Step S3: Based on the brain synchronization results of users before and after the application of multimodal sensory stimulation, provide users with a visual report reflecting the improvement of brain synchronization before and after group brain modulation.

[0010] The near-infrared brain functional imaging device in step S1 is used to collect brain activity signals from multiple users based on ultra-scanning technology, and then obtain the brain synchronization results between users based on the users' brain activity signals. The method for obtaining the brain synchronization results is as follows:

[0011] First, the wavelet-transform coherence method is used to obtain the coherence between the brain activity signals of the two users. Then, the coherence between the two brain activity signals is used as the brain synchronization result between the two users.

[0012] The brain synchronization results between users are achieved through a signal processing module. The input of the signal processing module is the user's brain activity signal, and the output is the brain synchronization results between the two users.

[0013] In step S1, the baseline level of interbrain synchronization of the user is specifically the result of interbrain synchronization of the user before the application of multimodal sensory stimulation.

[0014] The specific steps of step S2 are as follows: First, multimodal sensory stimulation is applied to all users. After the multimodal sensory stimulation ends, the brain activity signals of the users are collected using a near-infrared brain functional imaging device. Then, the brain synchronization results between users after group brain modulation are obtained based on the brain activity signals of each user.

[0015] The multimodal sensory stimulation in step S2 includes one or more of rhythmic auditory stimulation, rhythmic tactile stimulation, and rhythmic visual stimulation.

[0016] The step S2 of applying multimodal sensory stimulation to all users specifically involves applying multimodal sensory stimulation of the same frequency (e.g., 6Hz) and in phase to all users.

[0017] II. A brain-group modulation device for implementing the above-described multimodal sensory stimulation:

[0018] This includes near-infrared brain functional imaging equipment, used to acquire signals of the user's brain activity;

[0019] Includes a signal processing module, used to obtain brain synchronization results between users based on the user's brain activity signals;

[0020] It includes a multimodal sensory stimulation device for applying multimodal sensory stimulation to all users, the multimodal sensory stimulation including one or more of auditory stimulation, tactile stimulation and visual stimulation.

[0021] It includes a visualization output module, which is used to output a visualization report on the improvement of brain-brain synchronization before and after the application of multimodal sensory stimulation, based on the brain-brain synchronization results of users before and after the application of multimodal sensory stimulation.

[0022] The multimodal sensory stimulation device includes headphones, a vibrator, and a computer display screen. The headphones are used to apply synchronous auditory stimulation to multiple users, the vibrator is used to apply synchronous tactile stimulation to multiple users, and the computer display screen is used to apply synchronous visual stimulation to multiple users.

[0023] In-phase auditory, tactile, or visual stimuli at specific frequencies are used to manipulate synchronized neural activity in specific brain regions of the user (such as the auditory, motor, and visual cortex).

[0024] The implementation steps of this invention include: acquiring baseline levels of brain synchronization among multiple users; administering in-phase auditory, tactile, or visual stimuli of specific frequencies to users to manipulate synchronous neural activity in specific brain regions (such as the auditory, motor, and visual cortices); acquiring the users' brain synchronization results again; and providing users with a visual report reflecting the improvement in brain synchronization before and after multimodal sensory stimulation, based on the users' brain synchronization results before and after multimodal sensory stimulation. This invention, by administering in-phase sensory stimuli of specific frequencies to users to manipulate their brain synchronization, provides a low-cost, simple-to-operate, highly user-acceptable, and scalable method and apparatus for multimodal brain modulation.

[0025] The principle of this invention is based on the phenomenon of neural entrainment. Brain science research reveals that external rhythmic stimuli (including rhythmic sound, images, and other sensory stimuli) can unidirectionally drive neural oscillations in corresponding brain regions, causing phase locking between the brain's neural oscillations and the external rhythmic stimuli, thus synchronizing the brain's neural oscillations with the external rhythmic stimuli. Specifically, when rhythmic stimuli are applied to a human individual, the neuronal clusters in the corresponding brain regions change from a baseline state (i.e., irregular firing activity) to a regularized activity state. Their activity frequency tends to synchronize with the external rhythmic stimuli, and their activity phase gradually couples with the external rhythmic stimuli, ultimately achieving synchronization between the brain's neural oscillations and the external rhythmic stimuli. When the rhythmic stimulus is removed, the synchronous activity of the neuronal clusters does not immediately disappear but has a sustained effect. Therefore, in this invention, when a specific rhythmic in-phase sensory stimulus (such as auditory, visual, or tactile stimulation) is applied to multiple users, the neural oscillations of the corresponding brain regions (such as the auditory, visual, and motor cortex) among the users are synchronized based on the neural entrainment phenomenon, thus achieving exogenous manipulation of brain synchronization.

[0026] The beneficial effects of this invention are:

[0027] 1. This invention relates to a method and apparatus for brain-group modulation. This invention can not only achieve in-phase stimulation at a specific frequency to manipulate the synchronization of brain activity between two or more users, but also has low cost, simple operation, flexible use, high user acceptance and easy popularization.

[0028] 2. This invention proposes a group brain modulation method and device based on multimodal sensory stimulation. This invention synchronizes the brain oscillation activity of two or more users by implementing in-phase sensory stimulation (auditory, visual or tactile stimulation) of a specific frequency to them, thereby achieving exogenous manipulation of brain synchronization.

[0029] 3. This invention manipulates the synchronicity of brain activity by administering in-phase sensory stimulation of a specific frequency to the user, which overcomes the problems of high cost, complex operation, low user acceptance, and limited promotion and application faced by existing brain-group modulation methods based on electrical stimulation (such as transcranial AC stimulation). It is expected to provide a practical technical means to promote interpersonal interaction. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the implementation process of the present invention;

[0031] Figure 2 This is a schematic diagram of the group brain modulation method based on multimodal sensory stimulation according to the present invention;

[0032] Figure 3 This is a schematic diagram of the experimental process of swarm brain modulation based on tactile stimulation according to an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the experimental process of group brain modulation based on visual stimulation according to an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the experimental process for group brain modulation based on auditory stimulation, according to an embodiment of the present invention.

[0035] Figure 6 This is a schematic diagram of the experimental process for group brain modulation based on multimodal sensory stimulation, according to an embodiment of the present invention. Detailed Implementation

[0036] The present invention will be described in detail below with reference to specific implementation examples. These examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way.

[0037] The basic idea of ​​this invention is to manipulate brain synchronization by administering in-phase sensory stimuli of a specific frequency to two or more individuals. This invention provides a method and apparatus for group brain modulation based on multimodal sensory stimulation, such as... Figure 2 As shown, the invention includes group brain modulation based on auditory, tactile, and visual stimuli, and the specific implementation steps are as follows: Figure 1 As shown:

[0038] Step S1: First, wear a near-infrared brain functional imaging device on the user's head to collect the user's brain activity signals and obtain the user's brain synchronization baseline level.

[0039] The near-infrared brain functional imaging device in step S1 comes from the same near-infrared brain functional imaging system and is used to acquire the user's brain activity signals based on hyperscanning technology. During the acquisition of the user's brain activity signals, the user needs to rest, clear their mind, and keep their head and body from moving significantly to ensure good signal quality.

[0040] The collected brain activity signals first need to be preprocessed, that is, principal component analysis is used to remove system noise caused by changes in respiration and blood pressure. Then, based on the users' brain activity signals, wavelet-transform coherence is used to calculate the time-frequency domain correlation between the brain activity time series of the two users to obtain the brain synchronization results between the users.

[0041] Step S2: Apply multimodal sensory stimulation to all users, and then obtain the brain synchronization results of the users after applying multimodal sensory stimulation;

[0042] The multimodal sensory stimulation in step S2 includes one or more of auditory, tactile, and visual stimuli. Auditory stimulation is achieved by having the user wear headphones; tactile stimulation is achieved by having the user wear a miniature vibrator; and visual stimulation is achieved by presenting the user with a flashing blank screen using a computer display.

[0043] It is important to note that before administering stimulation, the phase (in-phase) and frequency of the stimulation presentation need to be set (e.g., 6Hz, corresponding to the theta band in EEG signals). During stimulation, near-infrared ultrasound technology is used to record the user's brain activity signals, and the user is instructed not to engage in verbal or nonverbal communication.

[0044] After the brain-group modulation in step S2 is completed, the user is instructed to rest again, clear their mind, and keep their head and body from moving too much. At the same time, the user's brain activity signals are collected. Then, principal component analysis is used to preprocess the brain activity signals, and finally wavelet transform coherence analysis is used to obtain the brain synchronization results between users.

[0045] Step S3: Based on the brain synchronization results of users before and after the implementation of multimodal sensory stimulation, provide users with a visual report reflecting the improvement of brain synchronization before and after group brain modulation.

[0046] Based on the results of brain-to-brain synchronization before and after the implementation of multimodal sensory stimulation, a schematic diagram of the results was drawn to show the improvement of brain-to-brain synchronization before and after group brain modulation, and to explain the potential functional role of brain-to-brain synchronization.

[0047] The following is combined Figures 3 to 6 The present invention will be described in detail with reference to four preferred embodiments.

[0048] like Figure 3 As shown, the tactile stimulation-based group brain modulation method of the present invention will be described in detail.

[0049] The experiment consisted of three main phases: 1. Obtaining baseline brain synchronization levels between the two subjects (5 minutes). 2. Applying tactile stimulation of specific frequency and phase to the subjects (5 minutes) to manipulate brain synchronization. 3. Obtaining brain synchronization results from the two subjects again (5 minutes). It is important to note that throughout the experiment, both subjects wore signal acquisition devices from the same near-infrared brain imaging system to record their brain activity signals for calculating brain synchronization values. The specific steps are as follows:

[0050] Step 1: Two subjects were fitted with near-infrared brain imaging equipment. The main brain regions measured were the left prefrontal lobe and the temporo-parietal region. The subjects were instructed to rest (without communicating) and to clear their minds and keep their heads and bodies as still as possible to collect high-quality brain activity data as a baseline.

[0051] Principal component analysis was used to preprocess brain activity signals to remove system noise caused by changes in respiration and blood pressure. Wavelet-transform coherence was used to calculate the time-frequency domain correlation between brain activity time series of subjects to obtain the baseline level of brain synchronization among subjects.

[0052] Step 2: Fit the right index finger of two subjects with the same type of miniature vibrator. The miniature vibrator is used to generate vibration at a specified frequency (e.g., 6Hz) and phase (in phase) to implement tactile stimulation-based group brain modulation to manipulate the synchronous neural activity of the brain's motor cortex, and the subjects are instructed not to engage in verbal or nonverbal communication during the modulation period.

[0053] Step 3: The subjects were allowed to rest again, and brain activity signals from their left prefrontal and temporal-parietal lobes were collected. Principal component analysis was used to preprocess the brain activity signals. Wavelet transform coherence analysis was used to calculate the brain activity time series of the two subjects to obtain the brain synchronization results after group brain modulation.

[0054] Step 4: Based on the results of brain synchronization before and after tactile stimulation, draw a schematic diagram to show the improvement of brain synchronization before and after group brain regulation, and explain the potential functional role of brain synchronization, providing the subjects with a visual report reflecting the improvement of brain synchronization before and after group brain regulation.

[0055] like Figure 4 As shown, the visual stimulation-based group brain modulation method of the present invention will be described in detail.

[0056] The experiment consisted of three main phases: 1. Obtaining baseline brain synchronization levels between the two subjects (5 minutes). 2. Administering visual stimuli of specific frequency and phase to the subjects (5 minutes) to manipulate brain synchronization. 3. Obtaining brain synchronization results from the two subjects again (5 minutes). It is important to note that throughout the experiment, both subjects wore signal acquisition devices from the same near-infrared brain imaging system to record their brain activity signals for calculating brain synchronization values. The specific steps are as follows:

[0057] Step 1: Two subjects were fitted with near-infrared brain imaging equipment. The main brain regions measured were the prefrontal lobe and the parietal-occipital region. The subjects were instructed to rest (without communicating) and to clear their minds and keep their heads and bodies as still as possible to collect high-quality brain activity data as a baseline.

[0058] Principal component analysis was used to preprocess brain activity signals to remove system noise caused by changes in respiration and blood pressure. Wavelet transform coherence analysis was used to calculate the time-frequency domain correlation between brain activity time series of subjects to obtain the baseline level of brain synchronization among subjects.

[0059] Step 2: Place computer screens (with identical model, size, brightness, and other parameters) in front of two subjects to present visual stimuli. The visual stimuli are blank screens that flash at a specified frequency (e.g., 6Hz) and phase (in phase). Implement group brain modulation based on visual stimuli to manipulate the synchronous neural activity of the visual cortex of the brain, and instruct the subjects not to engage in verbal or nonverbal communication during the modulation period.

[0060] Step 3: The subjects were allowed to rest again, and brain activity signals from their prefrontal and parietal-occipital lobes were collected. Principal component analysis was used to preprocess the brain activity signals. Wavelet transform coherence analysis was used to calculate the brain activity time series of the two subjects to obtain the brain synchronization results of the subjects after group brain modulation.

[0061] Step 4: Based on the results of brain synchronization before and after the implementation of visual stimulation, draw a schematic diagram to show the improvement of brain synchronization before and after group brain regulation, and explain the potential functional role of brain synchronization, providing the subjects with a visual report reflecting the improvement of brain synchronization before and after group brain regulation.

[0062] like Figure 5 As shown, the brain-group modulation method based on auditory stimulation in this invention will be described in detail.

[0063] The experiment consisted of three main phases: 1. Obtaining baseline brain synchronization levels between the two subjects (5 minutes). 2. Administering auditory stimulation of specific frequencies and phases to the subjects (5 minutes) to manipulate brain synchronization. 3. Obtaining brain synchronization results from the two subjects again (5 minutes). It is important to note that throughout the experiment, both subjects wore signal acquisition devices from the same near-infrared brain imaging system to record their brain activity signals for calculating brain synchronization values. The specific steps are as follows:

[0064] Step 1: Two subjects were fitted with near-infrared brain imaging equipment. The main brain regions measured were the prefrontal lobe and the temporo-parietal region. The subjects were instructed to rest (without communicating), clear their minds, and keep their heads and bodies as still as possible to collect high-quality brain activity data as a baseline.

[0065] Principal component analysis was used to preprocess brain activity signals to remove system noise caused by changes in respiration and blood pressure. Wavelet transform coherence analysis was used to calculate the time-frequency domain correlation between brain activity time series of subjects to obtain the baseline level of brain synchronization among subjects.

[0066] Step 2: Two subjects are fitted with identical headphones. The headphones are used to play sound stimuli (such as “beep-beep-beep-beep-beep”) at a specified frequency (e.g., 6Hz) and phase (in phase) to implement group brain modulation based on auditory stimulation, in order to manipulate the synchronous neural activity of the auditory cortex of the brain, and to instruct the subjects not to engage in verbal or nonverbal communication during the modulation period.

[0067] Step 3: The subjects were allowed to rest again, and brain activity signals from their prefrontal and temporal-parietal lobes were collected. Principal component analysis was used to preprocess the brain activity signals. Wavelet transform coherence analysis was used to calculate the brain activity time series of the two subjects to obtain the brain synchronization results of the subjects after group brain modulation.

[0068] Step 4: Based on the results of brain synchronization before and after auditory stimulation, draw a schematic diagram to show the improvement of brain synchronization before and after group brain regulation, and explain the potential functional role of brain synchronization, providing the subjects with a visual report reflecting the improvement of brain synchronization before and after group brain regulation.

[0069] like Figure 6 As shown, the brain-group modulation method based on auditory, tactile and visual stimuli in this invention will be described in detail.

[0070] The experiment consisted of three main phases: 1. Obtaining baseline brain synchronization levels between the two subjects (5 minutes). 2. Administering multimodal sensory stimulation of specific frequencies and phases to the subjects (5 minutes) to manipulate brain synchronization. 3. Obtaining brain synchronization results from the two subjects again (5 minutes). It is important to note that throughout the experiment, both subjects wore signal acquisition devices from the same near-infrared brain imaging system to record their brain activity signals for calculating brain synchronization values. The specific steps are as follows:

[0071] Step 1: Two subjects were fitted with near-infrared brain imaging devices. The main brain regions measured were the prefrontal lobe and the temporo-parietal-occipital region. The subjects were instructed to rest (without communicating) and to clear their minds and keep their heads and bodies as still as possible to collect high-quality brain activity data as a baseline.

[0072] Principal component analysis was used to preprocess brain activity signals to remove system noise caused by changes in respiration and blood pressure. Wavelet transform coherence analysis was used to calculate the time-frequency domain correlation between brain activity time series of subjects to obtain the baseline level of brain synchronization among subjects.

[0073] Step Two: Two subjects are fitted with identical headphones, which play sound stimuli at a specified frequency (e.g., 6Hz) and phase (in-phase). Simultaneously, two identical computer monitors are placed in front of the subjects, which display flashing blank screen stimuli at a specified frequency (e.g., 6Hz) and phase (in-phase). A miniature vibrator of the same model is fitted to the right index finger of each subject, which vibrates at a specified frequency (e.g., 6Hz) and phase (in-phase). This implements group brain modulation based on auditory, visual, and tactile stimuli to manipulate the synchronous neural activity of the auditory, visual, and motor cortexes of the brain. Subjects are instructed not to engage in verbal or nonverbal communication during the modulation period.

[0074] Step 3: The subjects were allowed to rest again, and brain activity signals from their prefrontal and temporal-parietal-occipital lobes were collected. Principal component analysis was used to preprocess the brain activity signals. Wavelet transform coherence analysis was used to calculate the brain activity time series of the two subjects to obtain the brain synchronization results after group brain modulation.

[0075] Step 4: Based on the results of brain synchronization between subjects before and after the implementation of multimodal sensory stimulation, draw a schematic diagram of the results to present the improvement of brain synchronization before and after group brain regulation, and explain the potential functional role of brain synchronization, providing subjects with a visual report reflecting the improvement of brain synchronization before and after group brain regulation.

[0076] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A group brain modulation method based on multimodal sensory stimulation, characterized in that, Includes the following steps: Step S1: First, wear near-infrared brain functional imaging devices on the heads of multiple users. Based on super-scanning technology, simultaneously collect brain activity signals of multiple users. After removing system noise caused by changes in respiration and blood pressure through principal component analysis, calculate the time-frequency domain correlation between the brain activity time series of two users through wavelet transform coherence analysis to obtain the brain synchronization baseline level between users. Step S2: Based on neural entrainment, multimodal sensory stimuli of the same frequency and phase are applied to all users simultaneously to manipulate the synchronous activity of specific brain regions of the users. The specific brain regions of the users include the auditory cortex, motor cortex, and visual cortex. Then, the brain synchronization results of the users after the application of multimodal sensory stimuli are obtained. The multimodal sensory stimulation in step S2 includes one or more of rhythmic auditory stimulation, rhythmic tactile stimulation, and rhythmic visual stimulation, wherein the auditory stimulation is implemented by having the user wear headphones. Tactile stimulation is achieved by having users wear miniature vibrators; visual stimulation is achieved by using a computer screen to present users with flashing blank screen stimulation. When stimulation is applied, near-infrared super-scanning technology is used to simultaneously record the brain activity signals of multiple users, and users are instructed not to engage in verbal or non-verbal communication. The specific steps of applying multimodal sensory stimulation to all users in step S2 are as follows: simultaneously and synchronously applying multimodal sensory stimulation of the same frequency and phase to all users; Step S3: Based on the brain synchronization results of users before and after the application of multimodal sensory stimulation, provide users with a visual report reflecting the improvement of brain synchronization before and after group brain modulation and the potential functional role of brain synchronization.

2. The method for group brain modulation based on multimodal sensory stimulation according to claim 1, characterized in that: The near-infrared brain functional imaging device in step S1 is used to collect brain activity signals from multiple users, and then the brain synchronization results between users are obtained based on the users' brain activity signals. The method for obtaining the brain synchronization results is as follows: First, the coherence between the brain activity signals of the two users is obtained using wavelet transform coherence analysis. Then, the coherence between the two brain activity signals is used as the brain synchronization result between the two users.

3. The method for group brain modulation based on multimodal sensory stimulation according to claim 1, characterized in that: In step S1, the baseline level of interbrain synchronization of the user is specifically the result of interbrain synchronization of the user before the application of multimodal sensory stimulation.

4. The method for group brain modulation based on multimodal sensory stimulation according to claim 1, characterized in that: The specific steps of step S2 are as follows: First, multimodal sensory stimulation is applied to all users. After the multimodal sensory stimulation ends, the brain activity signals of the users are collected using a near-infrared brain functional imaging device. Then, the brain synchronization results between users after group brain modulation are obtained based on the brain activity signals of each user.

5. A brain-group modulation device for implementing multimodal sensory stimulation according to any one of claims 1-4, characterized in that: This includes near-infrared brain functional imaging equipment, used to acquire users' brain activity signals based on ultra-scanning technology; It includes a signal processing module, which is used to process the brain activity signals of users by removing system noise caused by changes in respiration and blood pressure through principal component analysis, and then calculate the time-frequency domain correlation between the brain activity time series of two users through wavelet transform coherence analysis to obtain the brain synchronization results between users; The device includes a multimodal sensory stimulation device for applying multimodal sensory stimulation of the same frequency and phase to all users based on neural entrainment, thereby manipulating the synchronous activity of specific brain regions of the users, including the auditory cortex, motor cortex, and visual cortex, and the multimodal sensory stimulation including one or more of auditory stimulation, tactile stimulation, and visual stimulation; The multimodal sensory stimulation includes one or more of rhythmic auditory stimulation, rhythmic tactile stimulation, and rhythmic visual stimulation. The auditory stimulation is implemented by having the user wear headphones; the tactile stimulation is implemented by having the user wear a miniature vibrator; and the visual stimulation is implemented by presenting the user with a flashing blank screen using a computer display. When stimulation is applied, near-infrared ultra-scanning technology is used to record the user's brain activity signals, and the user is instructed not to engage in verbal or non-verbal communication. It includes a visualization output module, which outputs a visualization report on the improvement of brain-brain synchronization and the potential functional role of brain-brain synchronization before and after the application of multimodal sensory stimulation, based on the brain-brain synchronization results of users before and after the application of multimodal sensory stimulation.

6. A multimodal sensory stimulation group brain modulation device according to claim 5, characterized in that: The multimodal sensory stimulation device includes headphones, a vibrator, and a computer display screen. The headphones are used to apply synchronous auditory stimulation to multiple users, the vibrator is used to apply synchronous tactile stimulation to multiple users, and the computer display screen is used to apply synchronous visual stimulation to multiple users.

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