现代电子技术2016，Vol.39Issue(9)：61-65,5.DOI:10.16652/j.issn.1004-373x.2016.09.014
不同编码分组调制的VEP脑机接口研究
Study on VEP brain-computer interface with different coding grouping modulation
摘要
Abstract
In current various implementation paradigms of brain⁃computer interface(BCI),the c⁃VEP based BCI achieved the highest information transfer rate,but this BCI system must have a compromise among the stimulation target quantity,detec⁃tion accuracy and detection speed. To increase the stimulation target quantity and ensure the high recognition rate,the code length must be increased,but it will lead to time increasing to recognize a target,and information transfer rate reducing. To solve this problem,a stimulation target method applied with different coding grouping modulations is proposed. Based on this method,the Golay code and nearly perfect code are used to modulate 16 stimulation targets respectively. The target identifica⁃tion method is used to obtain the reference templates of two target groups. The two templates are shifted to obtain all target tem⁃plates,and then the template matching method is used to recognize the target. The average classification accuracy of a stimula⁃tion period for 7 subjects can reach up to 92.34%. The research results show that the method can increase the stimulation target quantity,improve the recognition rate,and shorten the detection time.关键词
脑机接口/调制/Golay码/模板匹配法Key words
BCI/modulation/Golay code/template matching method分类
信息技术与安全科学引用本文复制引用
黄引,魏庆国,李茂全,卢宗武..不同编码分组调制的VEP脑机接口研究[J].现代电子技术,2016,39(9):61-65,5.基金项目
国家自然科学基金项目（61365013）；江西省自然科学基金项目 （）
