第29卷 第4期 2012年 8月 生物医学工程学杂志 Journal of Biomedical Engineering Vol.29 No.4August 2012 视听刺激脑电信号的相位同步分析* 张立伟△ 刘国忠 罗 倩 徐炜君 (北京信息科技大学光电信息与通信工程学院,北京100192) 摘 要:脑电(EEG)同步被认为是脑功能区域整合的表现。高级脑功能需要具有特定功能的多区域神经系统间进行不同层次的整合和协调来完成。本文提出了一种新的相位同步分析方法—互近似熵。采用分段频率,用同步指数、互信息熵与互近似熵方法对视听刺激EEG导联数据进行了相位同步的比较分析,三种分析得到了一致的结果,说明互近似熵方法也能很好反映出两导联的相位同步。文章同时通过相位同步分析结果进行了大脑反应区域的探索分析。此研究为脑机接口的设计奠定了基础。 关键词:视听刺激;相位同步;互近似熵;脑功能区 中图分类号 R-3;TN91 文献标识码 A 文章编号 1001-5515(2012)04-0645-05 Phase Synchronization Analysis of EEG Signal During Audio-visual Stimulation Zhang Liwei Liu Guozhong Luo Qian Xu Weijun ( School of Photoelectronic Information & Communication Engineering , Beijing Information Science & Technology University , Beijing 100192, China ) Abstract:EEG Synchronization is considered the conformity of the brain functional areas.Advanced brain functionrequires many nervous systems with a specific function in relevant brain regions(areas) to achieve integration and co-ordination at different levels.In this paper,a new method for phase synchronization analysis—Mutually ApproximateEntropy is proposed to process different frequency band of EEG signal during audio-visual stimulation and get Similarresults with the method of Synchronization Index and Mutual Information Entropy.This showed that the MutuallyApproximate Entropy can lead to a good indication of the phase synchronization between two leads.The paper also explored the brain reaction zone by the results of the phase synchronization analysi