KR102478278B1 - Apparatus and method for brain mapping based on functional activity of brain - Google Patents

Abstract

Disclosed in the present specification is a method and apparatus for determining actual locations where brain signals of an object responding to sensory stimuli are generated, and determining an actual personal brain map of an object based on a positional relationship between actual locations where brain signals are generated for each sensory stimulus. provides An apparatus for determining a brain map according to an embodiment of the present disclosure includes a processor and a memory electrically connected to the processor and storing at least one code executed by the processor. The location of brain signal generation of the object in response to the sensory stimulus applied to the object is identified, and based on the location of brain signal generation for at least two different sensory stimuli, the location of each sensory region for at least two different sensory stimuli in the brain cortex is determined. A code causing a sensory region position ratio related to the positional relationship to be calculated and a personal brain map of the object to be determined based on the sensory region position ratio may be stored.

Description

Apparatus and method for determining brain maps based on functional activity of the brain

The present disclosure relates to an apparatus and method for determining a brain map based on functional activity of the brain (brain mapping), and more particularly, to an apparatus and method for determining an individual brain map based on individual brain response areas to sensory stimuli. It is about.

There is a conventional technique for measuring and analyzing brain signals (including brain waves) for the determination of various diseases such as epilepsy. Brain signals are based on electrical and magnetic activity in the brain resulting from ionic currents in neurons in the brain.

A typical method of measuring electroencephalography (EEG) among brain signal tests is to noninvasively measure the spontaneous electrical activity generated along with the activity of neurons in the brain over a certain period of time through electrodes attached to various parts of the scalp. or after the application of a specific stimulus.

Conventional electrode placement in electroencephalography is divided at regular intervals while covering the entire head based on anatomical features of the brain based on the medical basis that the brain performs a specific function in a specific region based on anatomical features. It was performed by regularly placing a plurality of electrodes on the site and analyzing the electroencephalogram signal obtained from each electrode. In this case, an electrode cap in which a plurality of electrodes are regularly disposed at positions divided at regular intervals on an elastic cap may be used.

That is, in a brain signal test including a conventional electroencephalogram test, on the premise that the brains of all people have the same shape and size, the signal measured from a specific electrode among a plurality of electrodes arranged in a certain rule is specific to the brain of the measurement subject. It is considered as a brain signal generated from the area of the brain that controls function.

However, since the size and shape of the brain differs from person to person, a specific electrode according to standard brain electrode placement, which has been considered to be located in the area of the brain responsible for a specific function, is located in a different place from the actual area of the brain responsible for a specific function. There are problems that can be located. Accordingly, there is a problem in that determining a disease of a subject by considering an EEG signal measured from a corresponding electrode as a brain signal for a specific function and analyzing the brain signal is problematic.

In addition, in recent human-computing interface (Human Machine Interface) technology, a technology for providing artificial senses by applying stimulation to a specific region of the brain is being researched. Even in this case, there is a problem in that applying stimulation to a location that has been regarded as a brain region in charge of a specific function without considering the size and shape of an individual's brain may result in applying stimulation to an area different from the actual one.

Prior Art: Korean Patent Registration No. 10-1540273 (registered on July 23, 2015)

An embodiment of the present disclosure provides an apparatus and method for determining an individual brain map based on individual brain response regions for sensory stimuli.

Another embodiment of the present disclosure provides an apparatus and method for determining morphological characteristics of an individual's brain, such as a ratio of the left hemisphere to the right hemisphere of the brain, based on individual brain response areas to sensory stimuli.

An embodiment of the present disclosure is a method for determining an actual location where a brain signal of an object responding to a sensory stimulus is generated, and determining an actual individual brain map of an object based on a positional relationship between actual locations where brain signals are generated for each sensory stimulus. and devices.

A method for determining a brain map according to an embodiment of the present disclosure includes determining, by a processor, a brain signal generation location of an object in response to a sensory stimulus applied to the object, and a brain signal generation location for at least two different sensory stimuli. calculating a sensory area location ratio related to a positional relationship of each sensory area with respect to at least two different sensory stimuli of the brain cortex based on the sensory area location ratio, and determining a personal brain map of the object based on the sensory area location ratio. can

An apparatus for determining a brain map according to an embodiment of the present disclosure includes a processor and a memory electrically connected to the processor and storing at least one code executed by the processor. The location of brain signal generation of the object in response to the sensory stimulus applied to the object is identified, and based on the location of brain signal generation for at least two different sensory stimuli, the location of each sensory region for at least two different sensory stimuli in the brain cortex is determined. A code causing a sensory region position ratio related to the positional relationship to be calculated and a personal brain map of the object to be determined based on the sensory region position ratio may be stored.

An apparatus and method for determining a brain map according to an embodiment of the present disclosure may help in interpretation of a brain signal by determining an individual brain map.

An apparatus and method for determining a brain map according to an embodiment of the present disclosure may apply stimulation to an accurate brain region of an object by determining an individual brain map.

1 is a diagram illustrating an environment for performing a method for determining a brain map or driving an apparatus for determining a brain map according to an embodiment of the present disclosure.
2 is a block diagram showing the configuration of an apparatus for determining a brain map according to an embodiment of the present disclosure.
3 is a flowchart illustrating a method of determining a brain map according to an embodiment of the present disclosure.
4 is a flowchart illustrating electrode arrangement according to the international 10-20 system according to an embodiment of the present disclosure.
5 is a diagram explaining a method of determining a brain signal generation location of an object according to an embodiment of the present disclosure.
6 is a diagram for explaining a method of determining a brain map based on sensory region location ratios according to an embodiment of the present disclosure.

Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings, but the same or similar elements are given the same reference numerals regardless of reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used together in consideration of ease of writing the specification, and do not have meanings or roles that are distinct from each other by themselves. In addition, in describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiment disclosed in this specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, the technical idea disclosed in this specification is not limited by the accompanying drawings, and all changes included in the spirit and technical scope of the present invention , it should be understood to include equivalents or substitutes.

Terms including ordinal numbers, such as first and second, may be used to describe various components, but the components are not limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

An environment for driving a device for determining a brain map or performing a method for determining a brain map according to an embodiment of the present disclosure will be described with reference to FIG. 1 .

An environment for performing a method for determining a brain map or driving a device for determining a brain map according to an embodiment of the present disclosure may include the apparatus 100 for determining a brain map and the apparatus 200 for measuring brain signals.

The brain signal measuring device 200 can measure brain signals, including electroencephalography (EEG), from a subject, and has a flexible hat divided at regular intervals according to the international 10-20 system. Brain signals may be received from an electrode cap in which a plurality of electrodes are regularly arranged or a plurality of electrodes arranged on the head of an object according to the international 10-20 system. The international 10-20 system is an international standard for the placement of electrodes that are attached or adhered to the scalp, and uses the distance between the bone marks of the head to determine the line system for electrode placement. Electrodes for measuring brain signals may be placed at intervals of 10% or 20% of the total length of these lines.

In the present specification, brain signals are described by taking an electroencephalogram as an example, but a brain signal is a concept that includes all electrical and magnetic signals generated from nerve cells in the brain, such as a magnetoencephalography (MEG).

The brain signal measuring device 200 may be included in the brain map determining device 100 or implemented separately from the brain map determining device 100 . When the brain signal measuring device 200 is implemented separately from the brain map determining device 100, the brain map determining device 100 transmits the brain signals measured from the brain signal measuring device 200 through a plurality of electrodes of the object through a network or a network. / can be received through the wireless interface.

In another embodiment, the brain signal measured by the brain signal measuring device 200 is a concept including the form of an image. For example, it may be an electroencephalogram topography generated based on an electroencephalogram, or may be in the form of an image as shown in FIG. 5 . In this specification, a brain signal is a concept that includes not only electric and magnetic signals generated in brain neurons, such as electroencephalograms and electroencephalograms, but also topography generated based on the electric and magnetic signals.

The brain signal measurement apparatus 200 may measure a brain signal of the object responding to the sensory stimulus presented after the sensory stimulus presentation device (not shown) presents the sensory stimulus to the object. The sensory stimulus presenting device may be implemented by being included in the brain signal measurement device 200 or the brain map determining device 100 . A sensory stimulus presentation device presents stimuli that cause a sense to an object, and may include stimuli for senses such as touch, sight, smell, and hearing. In an embodiment, the apparatus 100 for determining a brain map may generate a topography based on electrical and magnetic signals measured from the head of the object.

The apparatus 100 for determining a brain map may determine a location of generation of a brain signal in response to a sensory stimulus applied to an object among a plurality of brain signals measured by a plurality of electrodes. The generation location of the brain signal is confirmed by the brain map determination device 100 determined by the brain signal measurement device 200, or the brain map determination device 100 determines the brain based on the brain signal transmitted by the brain signal measurement device 200. The location of the signal can be determined.

A method for the brain map determination apparatus 100 to determine the location of the brain signal generated in response to the sensory stimulus applied to the object will be described in detail below.

The apparatus 100 for determining a brain map may determine a location where a brain signal is generated in response to a specific sensory stimulus, and for example, at least one of a toe tactile stimulus, a finger tactile stimulus, an auditory stimulus, an olfactory stimulus, and a visual stimulus. It is possible to confirm the occurrence location of the brain signal for . The generating location of the brain signal may not mean a specific electrode, but may be coordinates of the head or brain of the object. Alternatively, it may be a relative position indicated using the positions of specific electrodes.

The apparatus 100 for determining a brain map may calculate a ratio between positions of regions in charge of each sense in the object's brain based on the location of the brain signal generation, and determine the individual brain map of the object based on the ratio. This is explained in detail below.

The brain map determining device 100 may be a general computing device when the brain signal measuring device 200 is separately implemented, and may be a PC, laptop computer, smart phone, tablet PC, etc., or implemented as a server device to determine the brain map. Among brain signals measured by a plurality of electrodes transmitted by the device 100, the apparatus 100 for determining a brain map may be implemented as a method of determining a location where a brain signal in response to a sensory stimulus is generated.

The configuration of the apparatus 100 for determining a brain map according to an embodiment of the present disclosure will be described with reference to FIG. 2 .

The brain map determination device 100 includes a communication unit 110 for interfacing or communicating the brain signal measuring device 200 or the electrodes for measuring the brain signals, and the communication unit 110 includes a mobile communication module and a wireless Internet module. , a short-distance communication module may be included as the network interface 111 .

Technical standards or communication methods for mobile communication used in mobile communication modules (eg, GSM (Global System for Mobile communication), CDMA (Code Division Multi Access), CDMA2000 (Code Division Multi Access 2000), EV-DO (Enhanced Voice-Data Optimized or Enhanced Voice-Data Only), WCDMA (Wideband CDMA), HSDPA (High Speed Downlink Packet Access), HSUPA (High Speed Uplink Packet Access), LTE (Long Term Evolution), LTE-A (Long Term Evolution-Advanced), etc.) to transmit and receive radio signals with at least one of a base station, an external terminal, and a server on a mobile communication network.

The wireless Internet module refers to a module for wireless Internet access, and may be built into or external to the brain map determination device 100. The wireless Internet module is configured to transmit and receive radio signals in a communication network based on wireless Internet technologies.

Wireless Internet technologies include, for example, WLAN (Wireless LAN), Wi-Fi (Wireless-Fidelity), Wi-Fi (Wireless Fidelity) Direct, DLNA (Digital Living Network Alliance), WiBro (Wireless Broadband), WiMAX (World Interoperability for Microwave Access), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A), and the like.

The short-range communication module is for short-range communication, and includes Bluetooth™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and Near Field Communication (NFC). Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and wireless USB (Wireless Universal Serial Bus) technologies may be used to support short-distance communication.

The apparatus 100 for determining a brain map may include an interface unit 120 for providing a user's input or a notification to the user, and the interface unit 120 may include a button 121, a display 122, and light such as an LED. It may include an audio output module 123 such as an output module or a speaker. The interface unit 120 may include a mechanical input means (or a mechanical key, a dome switch, a jog wheel, a jog switch, etc.) and a touch input means. As an example, the touch input means consists of a virtual key, soft key, or visual key displayed on a touch screen through software processing, or a part other than the touch screen. It can be made of a touch key (touch key) disposed on.

The apparatus 100 for determining a brain map includes a memory 130 , and the memory 130 may store a brain signal received from the apparatus 200 for measuring brain signals or measured from an object.

In one embodiment, the memory 130 may store training data and code for training a machine learning-based learning model, or optimized model parameters of an artificial neural network included in a trained learning model.

The apparatus 100 for determining a brain map may use the processor 180 to infer a result value by training a machine learning-based learning model or applying the trained learning model to a specific input. The processor 180 repeatedly trains the artificial neural network using various learning techniques to determine optimized model parameters of the artificial neural network, or infers a result value by applying a learning model to an input according to the model parameters of the learned artificial neural network. can do.

The learning model based on machine learning is CNN, R-CNN (Region based CNN), C-RNN (Convolutional Recursive Neural Network), Fast R-CNN, Faster R-CNN, R-FCN (Region based Fully Convolutional Network) ), YOLO (You Only Look Once) or SSD (Single Shot Multibox Detector) structures.

The learning model may be implemented as hardware, software, or a combination of hardware and software, and when part or all of the learning model is implemented as software, one or more instructions constituting the learning model may be stored in the memory 130 .

The brain map determination device 100 may include a brain signal processing unit 140 that pre-processes brain signals, and the brain signal processing unit 140 is implemented as part of the processor 180 or implemented separately. It can be. In one embodiment, the brain signal processing unit 140 may be implemented as a DSP chip or GPU.

In an embodiment, when the brain signal is an electroencephalogram, the brain signal processing unit 140 may remove noise or artifact through amplification and filtering. Alternatively, the brain signal processing unit 140 may perform algorithms such as Fourier analysis and wavelet analysis, and as a configuration common to those skilled in the art, detailed descriptions are omitted herein.

When the brain signal is topography, the brain signal processing unit 140 may pre-process the topography brain signal through an image processing algorithm. For example, the brain signal processing unit 140 may remove or unify regions of a specific color or lower than a specific level in the topography, and in this case, the brain signal generation location may be determined based on a machine learning-based learning model. Inference can simplify the artificial neural network structure of the learning model or improve the processing speed.

The apparatus 100 for determining a brain map includes a processor 180 that is caused to determine a personal brain map of an object by a code stored in a memory 130 . The processor 180 identifies or determines a brain signal generation location based on a code implemented with an algorithm for determining a personal brain map or a learning model learned to infer a brain signal generation location from a brain signal topography, and determines a brain signal generation location. Based on this, a ratio between positions of regions in charge of each sense in the brain may be calculated, and a personal brain map of the subject may be determined based on the ratio.

A method for determining a brain map according to an embodiment of the present disclosure will be described with reference to FIG. 3 .

The brain map determining device may obtain a brain signal by receiving the brain signal from the brain signal measuring device or receiving the brain signal from the brain signal measuring electrode disposed on the head of the object ( S110 ). Alternatively, the brain signal may be obtained by loading the brain signal from the storage device. The brain signal may be a signal obtained by measuring electrical and magnetic signals generated in nerve cells of the brain, such as an electroencephalogram or an electroencephalogram, or a topography generated based on an electrical and magnetic signal such as an electroencephalogram or an electroencephalogram.

When the brain signal is an electroencephalogram, it may be an electrical signal measured from a plurality of electrodes placed on the head of the subject according to the international 10-20 system as shown in FIG. 4, and when the brain signal is topography, it is generated based on the electroencephalogram shown in FIG. It may be a form in which points having the same signal strength are connected in the form of a contour line.

When the brain signal is the level of the brain, the apparatus for determining the brain map may determine the actual occurrence location of the brain signal in response to a specific sensory stimulus applied to the object among a plurality of brain signals measured from a plurality of electrodes or an electroencephalogram or topography (S120 ).

When a specific sensory stimulus is presented to an object, electrical and magnetic signals having different intensities may be generated in multiple areas of the brain of the object, and the intensity of the electrical and magnetic signals in multiple areas of the brain over time from the presentation of the sensory stimulus. can change.

The apparatus for determining a brain map may determine a brain signal generation location for a specific sensory stimulus of an object, targeting brain signals at a time point at which an intensity difference between brain signals of a plurality of regions is the highest.

When the brain signal is the electroencephalogram, the brain map determination device determines that the voltage value of the electrode placed on the head of the subject has the greatest dispersion when the global field power (GFP), which is the tension for all parts of the brain, is the highest. That is, the time point at which the intensity difference between the brain signals is highest can be determined, and the corresponding time point can be determined according to Equation 1 below.

In other words, the brain map determination device is the point at which the electrical or magnetic signal generated in response to the specific sense in the region in charge of a specific sense is the largest compared to other regions through the point at which the intensity difference between the brain signals of the plurality of regions is the highest. can be determined by

In another embodiment, the apparatus for determining a brain map determines, when the brain signal is topography, the time when the variance of each pixel value indicated by the level or color of the voltage value of the electrode is the largest as the time point when the intensity difference between the brain signals is the highest. This can be calculated by changing the electrode to a pixel in [Equation 1]. Accordingly, the voltage values of the plurality of electrodes include the concept of a level or color of a pixel represented by topography.

The brain map determination device selects a point with the highest intensity among brain signals of a plurality of regions measured at a time point at which a difference in intensity (which may be voltage) between brain signals of a plurality of regions is the highest in the brain for a specific sensory stimulus of an object. It can be confirmed or determined by the location of the signal generation.

In an embodiment, the apparatus for determining a brain map responds to a specific sensory stimulus applied to an object with a point having the greatest intensity among brain signals of a plurality of regions based on a power contour line connecting positions of electrodes having the same intensity value. It can be determined by the actual location of the brain signal.

In one embodiment, a brain signal in response to a specific sensory stimulus is generated based on a plurality of arbitrary points 510 to 540 of a contour line of a region having a higher value than other electrodes in the topographical contour image of FIG. 5 . It can be determined by the actual location of occurrence. For example, a triangular point is found based on straight lines perpendicular to the contour line at a specific point (510, 520), and the highest signal is determined to be generated by a linear regression method using the position values of the four electrodes located closest to the triangular point. The inferred point can be determined as the actual location of the brain signal in response to a specific sensory stimulus.

In another embodiment, a contour image in the form of a topography as shown in FIG. 5 is input to a machine learning-based learning model trained with training data in which the brain signal topography is labeled as a brain signal generation location, and output from the learning model The location can be determined as the actual location of the brain signal in response to a specific sensory stimulus.

The brain map determination device calculates a sensory area location ratio related to the positional relationship of each sensory area with respect to at least two different sensory stimuli of the brain cortex based on the brain signal generation location for the at least two different sensory stimuli (S130). ), a personal brain map of the subject may be determined based on the sensory region position ratio (S140).

In an embodiment, the apparatus for determining a brain map may determine an individual brain map by loading a standard brain map in a memory and changing the standard brain map based on sensory region location ratios. Changing the standard brain map may be morphing the standard brain map based on a relationship between positions of regions in charge of each sense, which will be described in the following embodiments. The morphing method may use a technique known to those skilled in the art, and a detailed description thereof is omitted in this specification.

Referring to FIG. 6 , the brain region in charge of toe tactile sensation is located in the medial portion of the brain, the brain region in charge of hearing is located at the most lateral side from the center, and the brain region in charge of finger tactile sensation is located in the medial portion of the brain. It can be seen that the area of is located in the middle, the area of the brain in charge of smell is located at the bottom of the temporal lobe, and the area of the brain in charge of vision is located at the end of the occipital lobe.

The apparatus for determining a brain map may determine an individual brain map by determining an actual individual location of an object in charge of each sense, and considering a positional relationship of regions in charge of each sense.

In an embodiment, the apparatus for determining a brain map calculates a distance between a brain signal generation position for a toe tactile stimulus and a brain signal generation position for an auditory stimulus as a position ratio of the toe tactile and auditory sensory regions, and maps the individual brain of the object The ratio of the left hemisphere and the right hemisphere may be adjusted, and the ratio of the left hemisphere and the right hemisphere of the standard brain map may be adjusted.

Referring to FIG. 6, for example, since the areas in charge of toe touch are known as the inner left and right hemispheres of the brain, and hearing is known as the left and right hemispheres, the ratio of the positions of the sensory areas of toe touch and hearing in the toe touch According to this, the size of the left hemisphere/right hemisphere of the object, the ratio occupied by the entire brain, or the horizontal ratio of the left hemisphere/right hemisphere may be adjusted.

In an embodiment, the apparatus for determining a brain map may include a first distance between a brain signal generation position for a toe tactile stimulus and a brain signal generation position for a finger stimulus, and a brain signal generation position for a finger tactile stimulus and a brain signal for an auditory stimulus. A second distance between occurrence positions may be calculated, and based on a ratio of the first distance to the second distance, a lateral ratio of the frontal lobe in the individual brain map of the subject may be adjusted, and a lateral ratio of the frontal lobe of the standard brain map may be adjusted. It may be to adjust the proportions. In the case of somatosensory, the sensory areas corresponding to the human limbs and face are located in order in the postcentral sulcus, right behind the central sulcus of the brain, and in the case of the area in charge of finger sensation Corresponding to the middle of these orders, it can be used to adjust the lateral ratio of the frontal lobe or the occipital lobe.

In one embodiment, the apparatus for determining the brain map may include a third distance between a brain signal generation location for a toe tactile stimulus and a brain signal generation location for an auditory stimulus, and a brain signal generation location for an auditory stimulus and a brain signal generation location for an olfactory stimulus A fourth distance between locations may be calculated, and the ratio of the frontal lobe and the temporal lobe in the individual brain map of the subject may be adjusted based on the ratio of the third distance to the fourth distance, which is the ratio of the frontal lobe and the temporal lobe of the standard brain map. It may be an adjustment. The brain map determination device adjusts the lateral ratio or length of the frontal lobe and temporal lobe based on the ratio of the brain area in charge of smell located at the bottom of the temporal lobe and the brain area in charge of hearing located at the most lateral side of the center of the brain. can

In one embodiment, the apparatus for determining the brain map may include a fifth distance between a brain signal generation location for a finger tactile stimulus and a brain signal generation location for a visual stimulus, and a brain signal generation location for an olfactory stimulus and a brain signal generation location for a visual stimulus A sixth distance between positions may be calculated, and based on a ratio of the fifth distance to the sixth distance, the ratio of the occipital lobe in the individual brain map of the object may be adjusted, which may be adjusting the ratio of the occipital lobe in the standard brain map. . The brain map determination device refers to the distance between the area of the brain in charge of vision located at the end of the occipital lobe, that is, the area corresponding to the occiput in the human head and the area in charge of finger sensation, from the occipital lobe to the posterior central gyrus, The distance between the brain region in charge of smell and the brain region in charge of vision refers to the distance from the occipital lobe to the lower temporal lobe, and the brain map determination device is based on the ratio of the distance to the dorsal and ventral (dorsal) of the occipital lobe ( ventral) ratio, which may be adjusting the ratio of the occipital lobe of the standard brain map.

After determining the individual brain map, the apparatus for determining the brain map may display a brain signal generating position of the object or an electrode position measuring the corresponding brain signal on the determined individual brain map, and output the result on a display. Accordingly, it is possible to accurately determine in which brain region the brain signals measured from the plurality of electrodes are generated.

100: brain map decision device
200: brain signal measurement device
210: electrode cap
300: server device

Claims (13)

identifying, by a processor, a location where a brain signal is generated in the object in response to a sensory stimulus applied to the object;
The processor calculates a sensory area position ratio, which is a ratio between the positions of each sensory area for at least two different sensory stimuli in the brain cortex based on the brain signal generating position for the at least two different sensory stimuli. doing; and
Determining a personal brain map of the object by adjusting, by the processor, the size or shape ratio of at least one part of the left hemisphere and the right hemisphere of the brain of the object differently from each other based on the position ratio of the sensory region. ,
Methods for determining brain maps in electronic devices.
processor; and
A memory electrically connected to the processor and storing at least one code executed by the processor;
When the memory is executed by the processor, the processor determines the brain signal generation location of the object in response to the sensory stimulus applied to the object, and the brain cortex based on the brain signal generation location for at least two different sensory stimuli. Calculate a sensory area position ratio, which is a ratio between the positions of each sensory area for at least two different sensory stimuli, and calculate the size of at least one part of the left hemisphere and the right hemisphere of the brain of the object based on the sensory area position ratio or storing a code that causes a personal brain map of the object to be determined by adjusting the morphological proportions differently;
brain map determination device.
According to claim 2,
When the memory is executed by the processor, the processor identifies brain signals of multiple regions of the brain of the object in response to sensory stimuli, and the plurality of brain signals at a time point at which an intensity difference between the brain signals of the plurality of regions is highest. Further storing a code that causes a point having the greatest intensity among brain signals of the region to be identified as a brain signal generation position for the sensory stimulation of the object,
brain map determination device.
According to claim 3,
Brain signals of multiple regions of the brain of the object are obtained from a plurality of electrodes mounted on the head of the object,
The memory further includes code that, when executed by the processor, causes the processor to determine a time when the variance of voltage values of the plurality of electrodes is greatest as a time point at which an intensity difference between the brain signals of the plurality of regions is highest. to save,
brain map determination device.
According to claim 3,
The brain signals of the plurality of regions of the brain of the object are topography of the object generated based on signals measured by a plurality of electrodes mounted on the head of the object,
When the memory is executed by the processor, the processor applies a machine learning-based learning model trained with training data in which the brain signal topography is labeled as a brain signal generation location to the topography of the object to generate the brain signal. further storing the code that causes the identification of the signal generation location;
brain map determination device.
According to claim 4,
Brain signals of multiple regions of the subject's brain were obtained from the plurality of electrodes based on the international 10-20 system,
When the memory is executed by the processor, the processor determines the level of the plurality of areas based on power contour lines connecting positions of electrodes having the same intensity value at a point in time when an intensity difference between brain signals of the plurality of areas is the highest. Further storing a code that causes a point with the greatest intensity among brain signals to be identified as the brain signal generation location,
brain map determination device.
According to claim 3,
The memory, when executed through the processor, causes the processor to identify the brain signal generation location for at least one of sensory stimuli of toe tactile stimulation, finger tactile stimulation, auditory stimulation, olfactory stimulation, and visual stimulation. to save more,
brain map determination device.
According to claim 7,
When the memory is executed by the processor, the processor calculates a first distance between a brain signal generation position for a toe tactile stimulus and a brain signal generation position for an auditory stimulus, and based on the first distance, determines the target object. Further storing code that causes the personal brain map to be determined by adjusting the ratio of the left hemisphere and the right hemisphere in the personal brain map.
brain map determination device.
According to claim 7,
When the memory is executed by the processor, the processor determines the first distance between the brain signal generation location for the toe tactile stimulation and the brain signal generation location for the finger stimulation, and the brain signal generation location for the finger tactile stimulation and the auditory stimulus. The individual brain by calculating a second distance between brain signal generation positions for the first distance and adjusting the lateral ratio of the frontal lobe in the individual brain map of the subject based on the ratio of the first distance to the second distance. further storing the code that causes the map to be determined;
brain map determination device.
According to claim 7,
When the memory is executed by the processor, the processor determines a first distance between a brain signal generation location for a toe tactile stimulus and a brain signal generation location for an auditory stimulus, and a brain signal generation location for an auditory stimulus and a brain signal generation location for an olfactory stimulus. Determines the individual brain map by calculating a second distance between brain signal generating positions and adjusting the ratio of the frontal lobe and the temporal lobe in the individual brain map of the object based on the ratio of the first distance to the second distance which further stores the code that causes it to
brain map determination device.
According to claim 7,
When the memory is executed by the processor, the processor determines a first distance between a brain signal generation position for a finger tactile stimulus and a brain signal generation position for a visual stimulus and a brain signal generation position for an olfactory stimulus and a visual stimulus. Calculating a second distance between brain signal generating positions, and adjusting a ratio of the occipital lobe in the personal brain map of the object based on a ratio of the first distance to the second distance to cause the personal brain map to be determined to save more code,
brain map determination device.
According to claim 2,
When the memory is executed by the processor, the processor loads a standard brain map and changes the size or ratio of at least one part of the standard brain map based on the location ratio of the sensory region to change the individual brain map of the object. further storing code that causes to determine
brain map determination device.
According to claim 2,
The memory, when executed by the processor, causes the processor to display and output, on the individual brain map, the generating position or electrode position of the brain signal of the subject received after determining the individual brain map of the subject. to save more
brain map determination device.

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