WO2016177062A1

WO2016177062A1 - Brainwave induction control method and brainwave induction device

Info

Publication number: WO2016177062A1
Application number: PCT/CN2016/075476
Authority: WO
Inventors: 刘冬冬; 张博; 杨晓文
Original assignee: 刘冬冬; 张博; 杨晓文
Priority date: 2015-05-05
Filing date: 2016-03-03
Publication date: 2016-11-10
Also published as: CN104783788A

Abstract

A brainwave induction control method and a brainwave induction device (1). By detecting a brainwave signal of a human body during the process of brainwave induction, a feedback loop of an optical signal and a human body response (a brainwave signal) is formed, and stimulation is adjusted step by step according to feedback, so that the accuracy of brainwave induction can be improved.

Description

Brain wave induction control method and brain wave induction device

The present application claims priority to Chinese Patent Application No. 2015102239971, filed on May 5, 2015, entitled,,,,,,,,,,,,,,,,,,,,,,,,,,,,, in.

Technical field

The invention relates to biomedical engineering technology, in particular to an electroencephalogram induction control method and an electroencephalogram induction device.

Background technique

When the human body receives a constant frequency of stimulation (sound, light, etc.) in the external environment, the brain produces a response with the external stimulus frequency or its harmonics at the same frequency. When the human body receives a visual stimulus of a certain frequency, it will produce a corresponding visual evoked potential in the cerebral cortex, especially in the occipital region of the brain. Steady State Visually Evoked Potential (SSVEP) is one of the brain resonance effects. The steady-state visual evoked potential has a relatively obvious periodicity and contains the stimulation frequency and its harmonic components. Therefore, in the spectrum of the steady-state visual evoked potential, a more obvious peak can be found at the stimulation frequency and its harmonic frequency.

Electroencephalograph (EEG) of the human brain is a spontaneous rhythmic neuroelectric activity with a frequency range of 1-30 times per second, usually divided into five bands according to frequency, ie δ (1) -3 Hz), θ (4-8 Hz), α (8-13 Hz), β (14-30 Hz), and γ (30 or more). The delta wave usually appears in extreme fatigue and deep sleep; the θ wave usually appears in the state of frustration and depression; in the alpha wave state, the human body consumes the least energy, the relative brain gains higher energy, and the brain operates. It will be faster, smoother and more sensitive. The alpha wave is considered to be the best brain wave state for people to learn and think; the beta wave is the brain wave state of stress, stress, and brain fatigue; the gamma wave is less common and usually belongs to an abnormal state (such as epilepsy).

Brain wave induction based on visual evoked potentials can regulate human emotions so that the human brain can enter a corresponding state. However, the existing brain wave inducing devices use a fixed pattern of stimulation signals. Due to the modulation mechanism of the human brain, the brain's response to the stimulation signal will be different under different emotional states. This leads to the uneven application of this type of product, and even the opposite effect.

Summary of the invention

In view of this, the present invention provides an electroencephalogram induction control method and an electroencephalogram inducing device for monitoring a human brain wave letter No., a feedback loop that forms a light signal and a human body response to improve the accuracy of brain wave induction.

In a first aspect, the present invention provides a method for inducing brain wave induction, comprising:

Acquire the brain wave signal of the human body;

Adjusting an optical signal parameter for performing sensory stimulation according to the brain wave signal to cause the brain wave signal to be toward a target brain wave characteristic;

Wherein the adjusting the optical signal parameter comprises adjusting at least one of a wavelength of the optical signal, an intensity of the optical signal, and an incident angle of the optical signal with respect to the human eye.

Preferably, the adjusting the optical signal parameters according to the brain wave signal comprises:

Performing at least one of increasing the wavelength of the optical signal, reducing the intensity of the optical signal, and increasing the angle of incidence of the optical signal relative to the human eye to reduce the frequency of the brain wave signal and increase the amplitude of the brain wave signal;

Performing at least one of reducing the wavelength of the optical signal, increasing the intensity of the optical signal, and reducing the angle of incidence of the optical signal relative to the human eye to increase the frequency of the brain wave signal and reduce the amplitude of the brain wave signal .

Preferably, adjusting the optical signal parameters according to the brain wave signal comprises:

Adjusting the optical signal parameters in a first manner and maintaining a predetermined time;

When it is detected that the brain wave signal tends to change the target brain wave characteristic, the optical signal is continuously adjusted in a current manner; otherwise, the optical signal parameter is adjusted in a second manner;

The second mode is different from the first mode.

Preferably, the method further includes:

When it is detected that the brain wave signal parameter exceeds the safety threshold, the output of the optical signal is stopped.

Preferably, the method further includes:

Selecting and playing a matching music file according to the brain wave signal.

In a second aspect, a brain wave inducing device is provided, comprising:

An electroencephalogram detecting device for detecting an acquisition of a brain wave signal of a human body;

An optical signal output device for outputting an optical signal for performing sensory stimulation;

Control means for controlling the optical signal output device to adjust the optical signal according to the brain wave signal to cause the brain wave signal to be directed to a target brain wave characteristic;

Wherein, the control device controls the optical signal output device to adjust at least one of a wavelength of the optical signal, an intensity of the optical signal, and an incident angle of the optical signal with respect to the human eye.

Preferably, the control device controls the optical signal output device to perform at least one of increasing an optical signal wavelength, reducing an optical signal intensity, and increasing an incident angle of the optical signal with respect to a human eye to reduce the brain wave signal Frequency and Increasing an amplitude of the electroencephalogram signal; or controlling the optical signal output device to perform at least one of reducing a wavelength of the optical signal, increasing an intensity of the optical signal, and reducing an incident angle of the optical signal relative to the human eye to increase The frequency of the brain wave signal is large and the amplitude of the brain wave signal is reduced.

Preferably, the control device is configured to control the optical signal output device to adjust the optical signal in a first manner for a predetermined time, and continue to maintain when the brain wave signal is detected to change to a target brain wave characteristic The optical signal is adjusted in a current manner, otherwise the optical signal is adjusted in a second manner, the second manner being different from the first manner.

Preferably, the control device controls the optical signal output device to stop outputting the optical signal when detecting that the brain wave signal parameter exceeds a safety threshold.

Preferably, the method further comprises:

a sound signal output device for outputting a sound signal for performing sensory stimulation;

The control device is configured to select a matching music file according to the brain wave signal, and control the sound signal output device to play.

In a third aspect, a control device is provided, comprising:

Obtaining a module for acquiring a brain wave signal of the human body;

An adjustment module that adjusts an optical signal parameter for performing sensory stimulation according to the brain wave signal to cause the brain wave signal to be toward a target brain wave characteristic;

In a fourth aspect, a control device is provided for controlling an optical signal output by an optical signal output device, the control device comprising a processor, the processor being configured to execute an instruction comprising:

Acquire the brain wave signal of the human body;

The brain wave signal adjusts an optical signal parameter for performing sensory stimulation such that the brain wave signal tends toward a target brain wave characteristic;

By detecting the brain wave signal of the human body during the brain wave induction process, a feedback loop of the light signal and the human body reaction (brain wave signal) is formed, and the stimulation is gradually adjusted according to the feedback, thereby improving the accuracy of brain wave induction.

DRAWINGS

The above and other objects, features and advantages of the present invention will become more apparent from

1 is a schematic view of an electroencephalogram inducing device according to an embodiment of the present invention;

2 is a flow chart of a method for inducing brain wave induction according to an embodiment of the present invention;

3 is a flow chart of an optical signal adjustment method according to an embodiment of the present invention;

4 is a flowchart of another optical signal adjustment method according to an embodiment of the present invention;

Fig. 5 is a view showing a typical structure of a control device according to an embodiment of the present invention.

detailed description

The invention is described below based on the examples, but the invention is not limited to only these examples. In the following detailed description of the invention, some specific details are described in detail. The invention may be fully understood by those skilled in the art without a description of these details. In order to avoid obscuring the essence of the invention, well-known methods, procedures, procedures, components and circuits are not described in detail.

In addition, the drawings are provided for the purpose of illustration, and the drawings are not necessarily to scale.

Unless explicitly required by the context, the words "including", "comprising", and the like in the claims and the claims should be interpreted as meanings of meaning rather than exclusive or exhaustive meaning; that is, "including but not limited to" The meaning.

In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specified.

1 is a schematic view of an electroencephalogram inducing apparatus according to an embodiment of the present invention. As shown in FIG. 1, the brain wave inducing device 1 includes an electroencephalogram detecting device 11, an optical signal output device 12, and a control device 13.

The brain wave detecting device 11 is provided to be wearable on the head of the human body and in contact with human skin for detecting the brain wave signal of the human body. The brain wave detecting device 11 may include one or more dry active electrodes 11a (sensors) for detecting brain waves of the user. The one or more electrodes may be adjacent to the user's forehead and/or forehead side and/or adjacent to the skin behind the user's ear. One of the electrodes will be used as a ground electrode. The electrode 11a is usually made of metal. The brain wave detecting device 11 also typically includes a component (amplifier) for amplifying an analog signal collected by the electrode 11a, an analog signal filter, a digital-to-analog converter (ADC), a digital signal filter, a digital signal processor, and the like. One or more of the components. Thereby, the brain wave signal collected by the electrode 11a can be performed. The necessary processing is to enable it to be further processed. In some cases, a portion of the above components may be disposed in a portion worn by the human body, and another portion may be separated from the body wearing portion in a separate manner, and signals may be transmitted between the two portions via a bus or other wired/wireless communication connection.

Preferably, the brain wave detecting device 11 may also be integrated, and may include a wireless communication component to transmit the collected and processed brain wave signals to the control device 13 in a wireless manner (for example, based on Bluetooth or 2.4 GHz or Zigbee). .

The optical signal output device 12 is for outputting an optical signal for performing sensory stimulation. The optical signal output device 12 can adjust the parameters of the output optical signal according to the control of the control device 13, which can be a set of parameter adjustable illumination components or displays or projection devices, and the like.

The light signal output device 12 may be integrally provided with the brain wave detecting device 11, worn on the head of the human body, and located near the eye to facilitate projecting an optical signal for sensory stimulation to the human eye (which may be, for example, in visible glasses) The form is placed in front of the human eye). If the control device 13 is set independently of the electroencephalogram detecting device 11 and the optical signal output device 12 at this time, the optical signal output device 12 needs to be connected to the control device 13 through a wired/wireless communication component to receive its control, and if necessary, it can interact with the brain wave. The detecting means 11 shares a communication means to receive a control signal.

On the other hand, the optical signal output device 12 can also be provided integrally with the control device 13. When the control device 13 is a general-purpose data processing device (such as a tablet or mobile communication terminal) carrying a computer program, it may be a display.

On the other hand, the optical signal output device 12 can also be provided independently of the electroencephalogram detecting device 11 or the control device 13, which can be provided as an ambience adjusting lamp in an enclosed space (in a car or in a room).

The control device 13 is configured to control the optical signal output device 12 to adjust the optical signal parameters according to the electroencephalogram signal to cause the electroencephalogram signal to be directed to the target brain wave characteristic.

Specifically, the control device 13 controls the optical signal output device 12 to adjust at least one of the optical signal wavelength, the optical signal intensity, and the incident angle of the optical signal with respect to the human eye.

The control device 13 controls the optical signal to be adjusted by issuing a control command to the optical signal output device 12.

Conical sac cells close to the cortex are the main contributors to the scalp potential. The brain wave signal obtained by electrode detection is actually the detection signal of the scalp potential. Neurons will produce electrical activity under external stimulation. The electric fields generated by the equivalent current dipoles of all cone neurons are superimposed in space, forming the electric field distribution in the space inside and outside the brain, from which the potential information between any two points on the scalp of the brain can be calculated. Because the periodic current through each neuron can be decomposed into superimposed Fourier series of sinusoidal currents of different frequencies, and the sinusoidal current of each frequency can be equivalent to a current dipole antenna when passing through the neuron, so The field produced by neurons in space can be regarded as not A sinusoidal current dipole antenna of the same frequency produces a superposition of the field in space.

Based on the neuron current dipole theory combined with the current element directional theory, it can be assumed that there are N equivalent current dipoles inside the brain, and the electric field generated by each current dipole to any point is

The electric field at any point in space under the action of all current dipoles is the vector sum of all electric fields, ie

Thus, the calculation of the potential intensity between any two points A, B is:

At the same time, according to the simplified model of the relationship between the optical signal and the periodic current of the neuron, the spherical coordinate system can be constructed with the center of each current dipole as the origin.

Then there are:

Wherein U _AB is a potential signal characterizing the brain wave signal, and ω is an angular frequency of the light signal,

For correlation parameters that are inversely related to the wavelength of the optical signal (ie, positively correlated with the frequency of the optical signal), since the wavelength and frequency are inversely proportional in the same homogeneous medium, μ is the vacuum permeability and ε is the relative dielectric constant. Therefore, it can be considered that k is mainly affected by the angular frequency ω, that is, after the external stimulus, the neuron generates a sinusoidal current dipole of frequency ω. The above frequency is the optical characteristic frequency, not the source flicker frequency, S is the area of the brain wave electrode acquisition area, and A and B are the spatial positions of the brain wave electrodes, respectively.

For the vector from A to B, N is the predetermined number of magnetic dipoles between A and B, and I is the current intensity of the magnetic dipole associated with the optical signal strength, r' _m , θ' _m is the coordinate in any coordinate in the spherical coordinate system with the center of the i-th magnetic dipole as the origin.

The rotation coordinate angle used to convert the spherical coordinate system whose origin is the mth magnetic dipole center to the unified rectangular coordinate system.

When external stimuli act on neurons, the pyramidal cell population in a certain area is stimulated, which means that they are simultaneously and in the same direction, and then form a planar layer discharge, and the potential difference between the inner and outer sides of the cell membrane will decrease. Excitability is enhanced, along with the generation of an action potential, represented graphically as a peak pulse.

In the study of EEG, the brain can be regarded as an electromagnetic system. Usually, a current dipole can be used to represent the pyramidal cells in an excited state. The relationship between the current source in the brain and the external electromagnetic field can be described by the electrical phenomenon. The basic law of Maxwell is determined by the Maxwell equations. Light waves are also electromagnetic waves, so the parameters of the stimulating light signal can be linked to the brain electric field.

According to the above formula, the frequency and amplitude law of the EEG changes can be further obtained and corresponding to different brain wave classifications, such as β, α, θ and δ brain waves. According to this further analysis, it is known that an optical signal having a shorter wavelength (higher frequency) stimulates the discharge characteristic of the β-characteristic neuron, that is, the frequency of the brain wave. Light signal stimuli with longer wavelengths (lower frequencies) are more likely to stimulate the discharge rhythm of the δ characteristic of the neurons, that is, reduce the frequency of brain waves. At the same time, according to the above formula, the amplitude of the brain wave signal is also related to the wavelength of the light signal. Therefore, the shorter the wavelength of the light signal (the higher the frequency), the smaller the change of the brain wave signal potential generated by the sensory stimulation, and thus the brain power amplitude The lower the value.

At the same time, the current intensity of the current dipole is proportional to the intensity of the optical signal. Therefore, the amplitude of the brainwave signal is proportional to the intensity of the optical signal. At the same time, the incident angle of the optical signal with respect to the human eye is related to the intensity of the light received by the human eye. Therefore, changing the incident angle of the optical signal can also change the characteristics of the brain wave. Therefore, based on the above analysis, based on the existing theory of optical stimulation frequency, the present invention can more efficiently make the brain neuron discharges synchronized, and more effectively obtain the target brain wave characteristics.

Therefore, brain wave induction can be performed more accurately by adjusting at least one of the wavelength of the optical signal, the intensity of the optical signal, and the angle of incidence of the optical signal with respect to the human eye. At the same time, the accuracy of the adjustment is improved by selecting the direction or manner of adjustment based on the detected brain wave signal feedback.

2 is a flow chart of a method for inducing brain wave induction according to an embodiment of the present invention. The control device 13 can control the optical signal output device 12 to perform brain wave induction in accordance with the flow shown in FIG.

As shown in FIG. 2, the brain wave induction control method includes:

Step 210: Acquire a brain wave signal of the human body.

As described above, the control device 13 can receive the brain wave signal obtained by the detection via a bus or communication connection.

Step 220: Adjust an optical signal for performing sensory stimulation according to an electroencephalogram signal to cause the brain wave signal to be toward a target brain wave characteristic. Wherein the adjusting the optical signal comprises adjusting at least one of a wavelength of the optical signal, an intensity of the optical signal, and an incident angle of the optical signal with respect to the human eye.

A variety of adjustments can be used in accordance with embodiments of the present invention.

In a preferred embodiment, the control device 13 adjusts according to the above conclusions, that is, when the frequency of the brain wave signal is detected to be greater than the target brain wave characteristic, the control light signal output device 12 performs an increase in the wavelength of the optical signal and decreases. Light signal intensity, increasing at least one of an incident angle of the optical signal relative to the human eye to reduce the frequency of the brain wave signal and increase the amplitude of the brain wave signal, which causes the brain wave signal to appear more More low-frequency brainwave signal characteristics; when detecting that the frequency of the brainwave signal is smaller than the target brainwave characteristic, performing reduction of the wavelength of the optical signal, increasing the intensity of the optical signal, and reducing the incident angle of the optical signal with respect to the human eye At least one of increasing the frequency of the brainwave signal And reducing the amplitude of the brain wave signal.

In the embodiment of the present invention, the target brain wave characteristic can be set by the user through the human-machine interaction device. For example, when the concentration needs to be improved, the target brain wave characteristic can be selected to have the characteristics of the alpha wave, and the need is relieved. When anxious, the target brain wave characteristics can be selected to have a delta wave characteristic.

As mentioned above, in some cases, due to the modulation mechanism of the human brain, the response of the brain to the stimulation signal will be different under different emotional states. Therefore, in another preferred embodiment, the control device 13 adjusts depending on the feedback of the brain wave signal. As shown in FIG. 3, the adjustment manner includes:

Step 221: Control the optical signal output device to adjust the optical signal in a first manner and maintain a predetermined time.

For convenience of explanation, the optical signal wavelength will be increased as the first mode here. Of course, those skilled in the art can understand that the first mode can simultaneously adjust a plurality of optical signal parameters.

Step 222: Detect whether the brain wave signal tends to change to a target brain wave characteristic. If the step 223 is performed, if no, step 224 is performed.

Step 223: When detecting that the brain wave signal tends to change the target brain wave characteristic, continue to adjust the optical signal in a first manner (that is, continue to increase the wavelength of the optical signal), and return to the step after continuing for a predetermined time. 222.

Step 224: When it is detected that the brain wave signal does not change to the target brain wave characteristic, adjust the optical signal (that is, reduce the wavelength of the optical signal) in a second manner, and return to step 222 after continuing for a predetermined time. The second mode is the opposite of the first mode.

Of course, since a plurality of optical signal parameters can be adjusted, different human bodies react differently to the stimulus, and thus more than two adjustment modes can be obtained by combining the adjustment of the plurality of optical signal parameters. For example, by increasing the combination of the optical signal wavelength and the optical signal intensity adjustment mode, "increasing the optical signal wavelength + increasing the optical signal strength", "increasing the optical signal wavelength + reducing the optical signal strength", and "reducing the optical signal wavelength +" Four adjustment methods such as increasing the optical signal intensity and reducing the optical signal wavelength + reducing the optical signal strength. It can be adjusted by detecting the response of brain wave signals to different adjustment methods to obtain the best adjustment method.

Specifically, the adjustment process is as shown in FIG. 4, and includes:

Step 221', controlling the optical signal output device 12 to adjust the optical signal in a first manner and for a predetermined time.

Step 222', detecting whether the brain wave signal tends to change to a target brain wave characteristic, if step 223' is performed, and if no, step 224' is performed.

Step 223', when it is detected that the brain wave signal tends to change the target brain wave characteristic, continue to maintain the optical signal in the current mode, and returns to step 222' after continuing for a predetermined time.

Step 224', when it is detected that the brain wave signal does not change to the target brain wave characteristic change, another mode is selected to adjust the light signal, and returns to step 222' after continuing for a predetermined time.

Therefore, by adjusting in a feedback manner, it is possible to adapt to different responses of the human body to light signal stimulation, select an optimal brain wave induction method, and improve the accuracy of brain wave induction.

Of course, the above-described preferred embodiments can be applied to the control device 13 in combination with each other, and brain wave induction control can be performed under different conditions or settings.

On the other hand, when the intensity of the light signal is higher, the degree of synchronous discharge of the brain neurons is stronger. According to the physiological characteristics of the human eye, the light that is irradiated to the human eye is received by the photoreceptor cells, and during its hyperpolarization, the optical signal is converted into an electrical signal. If external glare stimulates a part of the user's eyes, the amplitude of the current that causes the cerebral cortical membrane of the cerebral cortex to pass is greatly increased. The stronger the light stimulation, the stronger the membrane current of the cell membrane, and the greater the change in brain electricity. When the transmembrane current caused by the light intensity exceeds a certain threshold, it will cause a series of physiological or biochemical side effects which may induce the user's physical discomfort. The brain wave signal can be monitored in real time, and when the brain wave signal parameter (amplitude or frequency) exceeds the safety threshold, the optical signal output device 12 is controlled to stop outputting the signal, that is, to stop stimulation of the human sense for brain wave induction. Thereby, the user can be secured.

At the same time, since the sound signal, especially the music signal, also has a large effect on brain wave induction, according to the method described in, for example, the Chinese patent application CN201410360309.1, it is possible to quickly and automatically match the music file in accordance with the current emotional state of the person based on the brain wave signal. Therefore, the brain wave inducing device of the present embodiment further adds a sound signal output device, and the control device 13 selects a matching music signal according to the brain wave signal, and controls the output device to play. Thus, combining sound stimulation with light signal stimulation can increase the accuracy of brain wave induction while improving comfort during induction.

In the present embodiment, the control device 13 can be configured as a general purpose data processing system (e.g., a computer system). As shown in FIG. 5, the computer system 5 is a form of a data processing system that can include a bus 51. A microprocessor (CPU) 52, a volatile memory 53, and a non-volatile memory 54 and/or a mass storage 55 are all connected to the bus 51 for data exchange and communication via the bus 51. Microprocessor 52 can be a stand-alone microprocessor or a collection of one or more microprocessors. The bus 51 connects the above-described plurality of components together while connecting the above components to the display controller 56 and the display device and the input/output (I/O) device 57. Input/output (I/O) device 57 can be a mouse, keyboard, modem, network interface, touch input device, somatosensory input device, printer, and other devices known in the art. Typically, input/output device 57 is coupled to the system via input/output controller 58.

Volatile memory 53 is also called memory, which has the characteristics of fast data reading and writing speed, specifically, volatile The memory 53 can be implemented by a dynamic random access memory (DRAM) that requires continuous power to update or maintain data in the memory.

Generally, the non-volatile memory 54 refers to a memory that does not disappear after the current is turned off, and may include, for example, a read only memory (ROM) and a flash memory. Non-volatile memory is typically used to store the necessary programs or other programs for system startup.

In general, the mass storage 55 can be a magnetic hard drive or a magnetic optical drive or other type of memory system that can store large amounts of data, and the mass storage 55 can also hold a large amount of data after the system is powered off. Although the mass storage 55 shown in FIG. 5 is a local device that is directly coupled to other components of the data processing system, it should be appreciated that the present invention may utilize remote mass storage, such as a network storage device coupled to a data processing system via a network interface, the network interface For example a modem or an Ethernet interface. Bus 51 may include one or more buses interconnected by a plurality of bridge connectors, controllers and/or adapters as are known in the art. In an embodiment, the I/O controller 58 includes a USB (Universal Serial Bus) adapter for controlling a USB peripheral device, an IEEE 1394 controller for an IEEE 1394 peripheral device, or a Bluetooth controller for controlling a Bluetooth peripheral device, and is applicable. Standard peripheral controllers for other peripheral interfaces.

Those skilled in the art will appreciate that some embodiments of the invention may be implemented in whole or at least in part by software. That is, embodiments of the present invention may be implemented in a computer system 5 or other data processing system by a processor, such as a microprocessor, executing a sequence of instructions contained in a memory, which may be volatile memory or remote storage. Device. In various embodiments, hardwired circuitry can be utilized in conjunction with software instructions to implement the present invention. As such, the technology is not limited to any specific combination of hardware circuitry and software, nor is it limited to any particular source of instructions being executed by the data processing system. In addition, throughout this specification, various functions and operations are described as being executed by software code or by software code to simplify the description. However, those skilled in the art will recognize that this expression means that the functionality is implemented by a processor executing, for example, microprocessor 52.

The brain wave inducing device of the present embodiment can be formed in various forms to adapt to different application scenarios, and the present invention does not limit its specific form.

The control device 13 can be integrated with the electroencephalogram detecting device 11 and the optical signal output device 12 to form an integrated wearable brain wave inducing device. The control device 13 can also be integrated with the electroencephalogram detecting device 11 and the optical signal output device 12 can be independently provided in a separate manner (for example, it is set as an ambient light of a closed space). The control device 13 can also be a general purpose data processing device, the optical signal output device 12 being a display integrated therewith, and the brainwave detecting device 11 is a peripheral device that communicates therewith via a wired or wireless communication connection. In this case, the combination of the optical signal output device 12 and the control device 13 may be, for example, a tablet or a mobile phone. The control device 13 controls the optical signal output device 12 (i.e., the display) to output an optical signal by operating a program or the like.

The embodiment of the invention can detect the brain wave signal of the human body during the brain wave induction process, form a feedback loop of the light signal and the human body reaction (brain wave signal), and gradually adjust the stimulation according to the feedback, thereby improving the accuracy of brain wave induction.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalents, improvements, etc. made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

A method for inducing brain wave induction, comprising:

Acquire the brain wave signal of the human body;

Adjusting an optical signal parameter for performing sensory stimulation according to the brain wave signal to cause the brain wave signal to be toward a target brain wave characteristic;

Wherein the adjusting the optical signal parameter comprises adjusting at least one of a wavelength of the optical signal, an intensity of the optical signal, and an incident angle of the optical signal with respect to the human eye.
The brain wave induction control method according to claim 1, wherein the adjusting the optical signal parameters according to the brain wave signal comprises:

Performing at least one of increasing the wavelength of the optical signal, reducing the intensity of the optical signal, and increasing the angle of incidence of the optical signal relative to the human eye to reduce the frequency of the brainwave signal while increasing the amplitude of the brainwave signal;

At least one of reducing the wavelength of the optical signal, increasing the intensity of the optical signal, and reducing the angle of incidence of the optical signal relative to the human eye is performed to increase the frequency of the brainwave signal while reducing the amplitude of the brainwave signal.
The brain wave induction control method according to claim 1, wherein the adjusting the optical signal parameters according to the brain wave signal comprises:

Adjusting the optical signal parameters in a first manner and maintaining a predetermined time;

When it is detected that the brain wave signal tends to change the target brain wave characteristic, the optical signal is continuously adjusted in a current manner; otherwise, the optical signal parameter is adjusted in a second manner;

The second mode is different from the first mode.
The brain wave induction control method according to claim 1, wherein the method further comprises:

When it is detected that the brain wave signal parameter exceeds the safety threshold, the output of the optical signal is stopped.
The brain wave induction control method according to claim 1, wherein the method further comprises:

Selecting and playing a matching music file according to the brain wave signal.
A brain wave inducing device, comprising:

An electroencephalogram detecting device for detecting an acquisition of a brain wave signal of a human body;

An optical signal output device for outputting an optical signal for performing sensory stimulation;

Control means for controlling the optical signal output device to adjust the optical signal according to the brain wave signal to cause the brain wave signal to be directed to a target brain wave characteristic;

Wherein the control device controls the optical signal output device to adjust the wavelength of the optical signal, the intensity of the optical signal, and the light At least one of the angles of incidence of the signal relative to the human eye.
The electroencephalogram inducing device according to claim 6, wherein said control means controls said optical signal output means to increase a wavelength of the optical signal, reduce the intensity of the optical signal, and increase the incidence of the optical signal with respect to the human eye. At least one of the angles to reduce the frequency of the brain wave signal and increase the amplitude; or to control the optical signal output device to perform reducing the wavelength of the optical signal, increasing the intensity of the optical signal, and reducing the optical signal relative to the human eye At least one of the incident angles increases the frequency of the brain wave signal and decreases the amplitude.
The electroencephalogram inducing device according to claim 6, wherein said control means is for controlling said optical signal output means to adjust said optical signal in a first manner for a predetermined time, and detecting said brain When the wave signal tends to change the target brain wave characteristic, the optical signal is continuously adjusted in the current manner. Otherwise, the optical signal is adjusted in a second manner, the second mode being different from the first mode.
The electroencephalogram inducing device according to claim 6, wherein said control means controls said optical signal output means to stop outputting the optical signal upon detecting that the electroencephalogram signal parameter exceeds a safety threshold.
The brain wave inducing device according to claim 6, further comprising:

a sound signal output device for outputting a sound signal for performing sensory stimulation;

The control device is configured to select a matching music file according to the brain wave signal, and control the sound signal output device to play.