Method for assisting evaluation of visual positioning based on brain-computer interface system

A visual positioning and machine interface technology, applied in the input/output of user/computer interaction, computer components, mechanical mode conversion, etc., can solve the problems of vague behavioral response judgment criteria, missed detection, etc., to ensure authenticity and effective, cost-effective effects

Active Publication Date: 2019-04-19
华南脑控(广东)智能科技有限公司
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AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to address the subjectivity of the evaluator in the existing clinical diagnosis technology, the evaluator himself is limited by eye movement disorders, and the existing behavioral scale evaluation has vague judgment standards for small behavioral responses, which may easily cause missed detection and other defects, a method based on the brain-computer interface system to assist the evaluation of visual orientation is proposed. This method combines the evaluation form of the CRS-R behavioral scale to construct a BCI system of visual novelty (oddball) paradigm to guide the subjects to understand the moving position. The target stimulus produces gaze and scores its visual orientation according to the EEG response, and ensures the accuracy and objectivity of the score

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  • Method for assisting evaluation of visual positioning based on brain-computer interface system
  • Method for assisting evaluation of visual positioning based on brain-computer interface system
  • Method for assisting evaluation of visual positioning based on brain-computer interface system

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with specific examples.

[0041] The method for assisting visual positioning based on the brain-computer interface system provided in this embodiment is as follows:

[0042] 1) Stimulus selection, arrangement and experimental paradigm design

[0043] Simulate the evaluation process of the visual orientation item in the behavioral scale, and design the brain-computer interface program, such as figure 1 As shown in , its user interface is as follows: a brightly colored sphere picture is used as a visual stimulus, and one of the four positions of up, down, left and right is randomly selected as a new target position. At the same time, a picture (a brightly colored sphere) to guide visual positioning behavior appeared in the center of the interface, and this picture moved after the experiment started to guide the subjects to fixate from the initial position to a new target position again. When the moving...

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Abstract

The invention discloses a method for assisting evaluation of visual positioning based on a brain-computer interface system. The method comprises the steps of 1) stimulating selection, arrangement andexperimental paradigm design; 2) signal acquisition; 3) data processing; 4) statistical test evaluation standard. The method is combined with a behavioral scale evaluation form of CRS-R, a visually newfangled (oddball) paradigm BCI system is constructed to guide a subject so as to stare at a moving target stimulus and score visual positioning according to electroencephalography response, and the accuracy and objectivity of scoring are ensured.

Description

technical field [0001] The present invention relates to the technical field of brain-computer interface technology and electrophysiological visual evoked potential, in particular to a method for assisting evaluation of visual positioning 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 EEG-based brain-computer interface system allows people to directly communicate with the outside world without the use of traditional nerve-muscle channels. 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 information of the brain's response to the external environment, and the brain-computer interface is to achieve An effective ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0484G06F3/01
CPCA61B5/4005A61B5/7267A61B5/378G06F3/015
Inventor 李远清肖君余天佑潘家辉
Owner 华南脑控(广东)智能科技有限公司
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