手指动作自动矫正的脑电特征  

Automatic Correction of Finger Movement on Electroencephalography

作　　者：宋亚林[1,2] 孙杳如[1] 

机构地区：[1]同济大学电子与信息工程学院,上海201804 [2]河南大学软件学院,河南开封475001

出　　处：《同济大学学报（自然科学版）》2017年第6期917-921,935,共6页Journal of Tongji University:Natural Science

基　　金：国家自然科学基金(61173116);上海市科委项目(14JC1402203);"十三五"国家科技支撑计划(2015BAF10B01)

摘　　要：设计了一个手指运动自动矫正实验,受试者在实验中通过手指控制电脑屏幕图标,执行手部动作快速自动矫正,同时被采集脑电(EEG)信号.选用后顶叶皮层区的脑电电极数据,经过叠加分析等处理,最终获得手部动作自动矫正的事件相关电位(ERP)成份.结果表明:目标跳变引发的自动矫正动作电位,呈现出一种特殊的电位特征,即先于150 ms左右出现一负性脑波,后于320 ms左右出现一正性脑波.An experiment of automatic correction of finger movement was designed. In the experiment, participants were asked to quickly point to a target＇s position with right thumb-stick controlling a hand-cursor on a screen and electroencephalography（EEG） signals were recorded as well. The relevant event-ralated potenial（ERP） components were analyzed by trials data averaging. The results show that a negativity at 150 ms and a positivity at 320 ms were found in jump trials.

关 键 词：手指动作自动矫正 事件相关电位(ERP) 双步指向任务 脑电(EEG) 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]