A method for assisting assessment of sound source localization based on brain-computer interface system
A technology of brain-computer interface and sound source localization, which is applied in nervous system assessment, medical science, diagnosis, etc., can solve problems such as missed detection, enhanced EEG response signal, and fuzzy judging criteria for tiny behavioral responses, so as to ensure authenticity and effectiveness, the effect that the cost is high
Active Publication Date: 2021-06-08
华南脑控(广东)智能科技有限公司
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[0006] The purpose of the present invention is to propose a method for auxiliary evaluation of sound source localization based on a brain-computer interface system, aiming at the fuzzy judging criteria for small behavioral responses in the existing behavioral scale assessment, which is likely to cause defects such as missed detection. The method simulates CRS -R's behavioral scale evaluation process, constructing a multi-modal brain-computer interface for multi-sensory stimulation, through visual, auditory and other sensory stimuli to generate EEG responses that do not completely overlap in time and space, and enhance EEG responses to external stimuli signal to improve the detection performance of brain-computer interface systems
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[0032] The present invention will be further described below in conjunction with specific examples.
[0033] The method for assisted evaluation of sound source localization based on the brain-computer interface system provided in this embodiment is as follows:
[0034] 1) Selection of visual and auditory stimuli and design of the experimental paradigm process for evaluation
[0035] Simulate the evaluation process of the sound source localization item in the behavioral scale, and design the brain-computer interface program. Such as figure 1 As shown, the specific process: the program begins to randomly select one of the left or right sound channels as the target position, and the sound channel of the target position will play a pleasant ringtone with a duration of 5-10 seconds, which will attract the attention of the subjects and then report to the subjects. The user interaction interface shown by the tester is as follows: bell pictures consistent with the semantics of the b...
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The invention discloses a method for assisting evaluation of sound source localization based on a brain-computer interface system, comprising steps: 1) selection of visual and auditory stimuli and design of an evaluation experimental paradigm flow; 2) signal collection; 3) data processing; 4 ) Statistical test evaluation criteria. The method of the present invention simulates the evaluation process of the CRS-R behavioral scale, constructs a multi-modal brain-computer interface for multi-sensory stimulation, generates incompletely overlapping EEG responses in time and space through different sensory stimuli such as vision and hearing, and enhances EEG The response signal to external stimuli improves the detection performance of the brain-computer interface system. Therefore, the assessment of sound source localization in the brain-computer interface system-assisted behavioral scale is used to obtain a more accurate and objective score for this item.
Description
technical field [0001] The present invention relates to the technical field of brain-computer interface technology and electrophysiological visual and auditory evoked potentials, in particular to a method for assisting evaluation of sound source localization based on a brain-computer interface system. Background technique [0002] Since the discovery of the scalp electroencephalogram (EEG) signal at the beginning of the last century, it has been used in the auxiliary diagnosis of nervous system diseases and the study of brain function. The brain-computer interface system based on EEG enables people to directly realize the communication between the brain and the outside world without the traditional nerve-muscle channel or to supplement and perfect the traditional behavioral observation results. By studying various evoked EEG signals in EEG signals, the mechanism of some specific signals, the spatial position of the signal source and their relationship to obtain the direct in...
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IPC IPC(8): A61B5/369A61B5/00
CPCA61B5/40A61B5/4005A61B5/7225A61B5/7264A61B5/369
Inventor 李远清肖君余天佑黄海云
Owner 华南脑控(广东)智能科技有限公司