Visual stimulation method and system and brain-computer interface system

The invention relates to the technical field of electroencephalogram interfaces, and provides a visual stimulation method and system and a brain-computer interface system.The method comprises the steps that a visual stimulation normal form is presented, a grid area of the visual stimulation normal f...

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Bibliographic Details
Main Authors WANG XIAO'AN, ZHU FANGKUN, CHEN SHANSHAN, GUO QIAN
Format Patent
LanguageChinese
English
Published 28.03.2023
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:The invention relates to the technical field of electroencephalogram interfaces, and provides a visual stimulation method and system and a brain-computer interface system.The method comprises the steps that a visual stimulation normal form is presented, a grid area of the visual stimulation normal form is controlled to flicker in a sine sampling modulation mode, and the visual stimulation normal form is formed by overlapping a background area and the grid area; the background area and the grid area are different in contrast ratio, the grid area is composed of a line area and a line cross point area, and the line area and the line cross point area are different in contrast ratio and width; synchronously acquiring electroencephalogram signals generated by the user under the current visual stimulation normal form; in the visual stimulation process, the brightness of the background area is controlled to be displayed according to a preset brightness value, the brightness value of the line area is controlled to cha
Bibliography:Application Number: CN202211541438