基于快速节律性运动的皮层脑电分析  

ECG collection and analysis during repetitively rhythmic movement

作　　者：邢华[1] 宾光宇[1] 张志广[1] 高小榕[1] 张国君[1] 

机构地区：[1]清华大学医学院生物医学工程系,北京100084

出　　处：《北京生物医学工程》2008年第4期376-379,共4页Beijing Biomedical Engineering

基　　金：北京市自然科学基金重点项目(3051001)资助

摘　　要：节律运动是人们生活中一种基本的运动形式,与单次运动相区别,快速节律运动在脑电中有特殊的表现形式。本文以两位植入皮层电极的癫痫病人作为受试,在1Hz与2Hz听觉节拍器提示下进行手指节律运动,同时记录皮层脑电数据。对脑电数据的能量和相关性进行离线分析,结果显示节律运动中运动感觉皮层脑电的能量在特定频段上呈下降趋势,相干性呈上升趋势,且运动相关能量与相干性在不同的运动速度下具有明显的统计性差异。对不同功能区之间相干性的分析表明辅助运动区可能是与运动速度有关的皮层功能区。Rhythmic is a basic element of human life. During the fast repetitive movements cortical potential represents different characters from those of separate movements performed slowly. In this article,we record＂ the electrocorticographic （ECG） activity from the brain surface of two epileptic patients during fast repetitive movement in two kinds of rates,analysis movement-related power and movement-related coherence of ECG signals and uncover that the power on special frequency band goes up while the coherence goes down. The two indexes appear statistically significant difference between fast and slow rate movement. Analysis of the coherence between different functional regions shows that SMA may be related to the movement rate.

关 键 词：皮层脑电 运动相关能量 运动相关相干系数 

分 类 号：R318.04[医药卫生—生物医学工程]