中国组织工程研究与临床康复2011，Vol.15Issue(17)：3152-3155,4.DOI:10.3969/j.issn.1673-8225.2011.17.027
基于脑电alpha波及运动想象的在线脑机接口系统设计
On-line brain-computer interface system design based on alpha wave and motor imagery
摘要
Abstract
BACKGROUND: At present, most of on-line brain-computer interface (BCI) systems adopt synchronous design, which cannot tell the switch between "active" state and "idle" state.OBJECTIVE: To design an effective BCI system design, which is free to switch between "active" state and "idle" state.METHODS: In this paper, an on-line BCI system was designed based on a series of physiological phenomenon, such as alpha wave-block, event related synchronization (ERS) and event related desynchronization (ERD). Through detecting the EEG recorded from occipital area, the two states being "active" and "idle" could be switched. Under the statement of "active", EEG captured from motor cortex was processed, and the frequency feature was extracted during different motor imagery tasks, in the end, the mind that user wanted to express was estimated.RESULTS AND CONCLUSION: The results show that the subject can switch freely between the two states by using this on-line BCI system after training. Using this method, the practicability of on-line BCI system is getting improved greatly.关键词
脑机接口/alpha波/运动想象/工作状态/空闲状态分类
医药卫生引用本文复制引用
王磊,王江,刘丽芳,杨硕,徐桂芝,颜威利..基于脑电alpha波及运动想象的在线脑机接口系统设计[J].中国组织工程研究与临床康复,2011,15(17):3152-3155,4.基金项目
河北省自然科学基金(E2009000062)"具有被试针对性的运动想象脑机接口技术研究",项目主持人为本文第一作者. （E2009000062）
