# US 11,432,758 B2 · Left and right brain recognition method and device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,432,758 B2 - Document ID: US11432758B2 - Status: Granted - Kind: B2 - Application number: 15/506,492 - Filed: 2015-08-26 - Published: 2017-08-31 - Granted: 2022-09-06 - Earliest claimed: 2014-08-27 - Assignees: Beijing Zhigu Tech Co., Ltd. - Applicants: Beijing Zhigu Tech Co., Ltd. - Inventors: Hao Liu - Web page: https://patentgrep.com/patent/US11432758B2 ## CPC - A61B 5/38: Acoustic or auditory stimuli - A61B 5/0006: {ECG or EEG signals} - A61B 5/165: {Evaluating the state of mind, e.g. depression, anxiety} - A61B 5/374: Detecting the frequency distribution of signals, e.g. detecting delta, theta, alpha, beta or gamma waves - A61B 5/6803: {Head-worn items, e.g. helmets, masks, headphones or goggles} - A61B 5/4064: {Evaluating the brain (for intracranial pressure A61B5/031; for cerebral blood gases A61B5/14553; using EEG A61B5/369)} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract The present application provides a left and right brain recognition method and device, and relates to the field of wearable devices. The method comprises: in response to that a user listens to an audio content meeting a predetermined condition, acquiring first brain electrical information of a first hemisphere of the user; and recognizing that the first hemisphere is a left brain or a right brain according to the first brain electrical information and reference information. The method and the device provide a left and right brain recognition method, facilitate a device that the user wears to perform automatic setting according to a recognition result, and enhance user experience. ## Claims ### Claim 1 A left and right brain recognition method, comprising: receiving, by a left and right brain recognition device, an audio content; playing, by speakers of the left and right brain recognition device, the received audio content to a user; in response to that the user listens to the received audio content, acquiring, by a first electroencephalograhy (EEG) electrode of the left and right brain recognition device, first brain electrical information of a first hemisphere of the user, wherein the first EEG electrode is in contact with the first hemisphere, and the first brain electrical information comprises EEG signals of the first hemisphere; acquiring, by the left and right brain recognition device, a first Power Spectral Density (PSD) value of an alpha band in the first brain electrical information; recognizing, by the left and right brain recognition device, that the first hemisphere is a left brain or a right brain according to the first PSD value and reference information, and generating a recognition result indicating the first hemisphere being the left brain or the right brain; and automatically configuring, by the left and right brain recognition device, channels in a first speaker corresponding to the first hemisphere and/or channels in a second speaker corresponding to a second hemisphere of the user who listens to the audio content according to the recognition result. ### Claim 2 (depends on 1) The method of claim 1, wherein the audio content is a piece of music. ### Claim 3 (depends on 1) The method of claim 1, wherein a play duration of the audio content is greater than a predetermined duration. ### Claim 4 (depends on 1) The method of claim 1, wherein the reference information is a brain electrical threshold determined according to left brain electrical information and right brain electrical information of the user. ### Claim 5 (depends on 4) The method of claim 4, wherein the recognizing, by the left and right brain recognition device, that the first hemisphere is the left brain or the right brain according to the first PSD value and the reference information comprises: in response to that the first PSD value is greater than the brain electrical threshold, recognizing that the first hemisphere is the left brain; and in response to that the first PSD value is less than the brain electrical threshold, recognizing that the first hemisphere is the right brain. ### Claim 6 (depends on 4) The method of claim 4, wherein the recognizing, by the left and right brain recognition device, that the first hemisphere is the left brain or the right brain according to the first PSD value and the reference information comprises: in response to that the first PSD value is less than the brain electrical threshold, recognizing that the first hemisphere is the left brain; and in response to that the first PSD value is greater than the brain electrical threshold, recognizing that the first hemisphere is the right brain. ### Claim 7 (depends on 1) The method of claim 1, further comprising: acquiring, by a second EEG electrode of the left and right brain recognition device, second brain electrical information of the second hemisphere of the user as the reference information, wherein the second brain electrical information comprises EEG signals of the second hemisphere, and the second EEG electrode is in contact with the second hemisphere. ### Claim 8 (depends on 7) The method of claim 7, wherein the recognizing, by the left and right brain recognition device, that the first hemisphere is the left brain or the right brain according to the first PSD value first brain electrical information and the reference information comprises: acquiring a second PSD value of an alpha band in the second brain electrical information; in response to that the first PSD value is greater than the second PSD value, recognizing that the first hemisphere is the left brain; and in response to that the first PSD value is less than the second PSD value, recognizing that the first hemisphere is the right brain. ### Claim 9 (depends on 7) The method of claim 7, wherein the recognizing, by the left and right brain recognition device, that the first hemisphere is the left brain or the right brain according to the first PSD value and the reference information comprises: acquiring a second PSD value of an alpha band in the second brain electrical information; in response to that the first PSD value is less than the second PSD value, recognizing that the first hemisphere is the left brain; and in response to that the first PSD value is greater than the second PSD value, recognizing that the first hemisphere is the right brain. ### Claim 10 A non-transitory computer-readable storage medium storing instructions which, when executed by a processor, cause the processor to perform operations comprising: receiving an audio content; playing, through speakers, the received audio content to a user; in response to that the user listens to the received audio content, acquiring, through a first electroencephalograhy (EEG) electrode, first brain electrical information of a first hemisphere of the user, wherein the first EEG electrode is in contact with the first hemisphere, and the first brain electrical information comprises EEG signals of the first hemisphere; acquiring a first Power Spectral Density (PSD) value of an alpha band in the first brain electrical information; recognizing that the first hemisphere is a left brain or a right brain according to the first PSD value and reference information, and generating a recognition result indicating the first hemisphere being the left brain or the right brain; and automatically configuring channels in a first speaker corresponding to the first hemisphere and/or channels in a second speaker corresponding to a second hemisphere of the user who listens to the audio content according to the recognition result. ### Claim 11 A left and right brain recognition device comprising a processor and a memory, the memory storing computer executable instructions, the processor being connected to the memory through a communication bus, wherein when the left and right brain recognition device operates, the processor executes the computer executable instructions stored in the memory, causing the left and right brain recognition device to execute operations comprising: receiving an audio content; playing, through speakers of the left and right brain recognition device, the received audio content to a user; in response to that the user listens to the received audio content of, acquiring, through a first electroencephalograhy (EEG) electrode of the left and right brain recognition device, first brain electrical information of a first hemisphere of the user, wherein the first EEG electrode is in contact with the first hemisphere, and the first brain electrical information comprises EEG signals of the first hemisphere; acquiring a first Power Spectral Density (PSD) value of an alpha band in the first brain electrical information; recognizing that the first hemisphere is a left brain or a right brain according to the first PSD value and reference information, and generating a recognition result indicating the first hemisphere being the left brain or the right brain; and automatically configuring channels of earphones in a first speaker corresponding to the first hemisphere and/or channels in a second speaker corresponding to a second hemisphere of the user who listens to the audio content according to the recognition result. ### Claim 12 (depends on 11) The device of claim 11, wherein the operations further comprise: determining a brain electrical threshold as the reference information according to left brain electrical information and right brain electrical information of the user. ### Claim 13 (depends on 12) The device of claim 12, wherein the operations further comprise: in response to that the first PSD value is greater than the brain electrical threshold, recognizing that the first hemisphere is the left brain; and in response to that the first PSD value is less than the brain electrical threshold, recognizing that the first hemisphere is the right brain. ### Claim 14 (depends on 12) The device of claim 12, wherein the operations further comprise: in response to that the first PSD value is less than the brain electrical threshold, recognizing that the first hemisphere is the left brain; and in response to that the first PSD value is greater than the brain electrical threshold, recognizing that the first hemisphere is the right brain. ### Claim 15 (depends on 11) The device of claim 11, wherein the operations further comprise: acquiring, through a second EEG electrode of the left and right brain recognition device, second brain electrical information of the second hemisphere of the user as the reference information, wherein the second EEG electrode is in contact with the second hemisphere, and the second brain electrical information comprises EEG signals of the second hemisphere. ### Claim 16 (depends on 15) The device of claim 15, wherein the operations further comprise: acquiring a second PSD value of an alpha band in the second brain electrical information; in response to that the first PSD value is greater than the second PSD value, recognizing that the first hemisphere is the left brain; and in response to that the first PSD value is less than the second PSD value, recognizing that the first hemisphere is the right brain. ### Claim 17 (depends on 15) The device of claim 15, wherein the operations further comprise: acquiring a second PSD value of an alpha band in the second brain electrical information; in response to that the first PSD value is less than the second PSD value, recognizing that the first hemisphere is the left brain; and in response to that the first PSD value is greater than the second PSD value, recognizing that the first hemisphere is the right brain. ### Claim 18 (depends on 11) The device of claim 11, wherein the left and right brain recognition device is included in a headphone. ### Claim 19 A left and right brain recognition device, comprising at least one executable instruction, which, in response to execution, causes a processor of the left and right brain recognition device to perform operations comprising: receiving an audio content; playing, through speakers of the left and right brain recognition device, the received audio content to a user; in response to that the user listens to the received audio content, acquiring, through a first electroencephalograhy (EEG) electrode of the left and right brain recognition device, first brain electrical information of a first hemisphere of the user, wherein the first EEG electrode is in contact with the first hemisphere, and the first brain electrical information comprises EEG signals of the first hemisphere; acquiring a first Power Spectral Density (PSD) value of an alpha band in the first brain electrical information; recognizing that the first hemisphere is a left brain or a right brain according to the first PSD value and reference information, and generating a recognition result indicating the first hemisphere being the left brain or the right brain; and automatically configuring channels of earphones in a first speaker corresponding to the first hemisphere and/or channels in a second speaker corresponding to a second hemisphere of the user who listens to the audio content according to the recognition result.