%0 Journal Article
%T TIME-FREQUENCY ANALYSIS OF SINGLE-SWEEP EVOKED POTENTIALS BASED ON WAVELET TRANSFORM<br>基于小波变换的单次诱发电位信号时频分析
%A ZHANG Jia-hua YANG Zhong-le
%A <br>张佳华
%A 杨仲乐
%J 生物物理学报
%D 2004
%I 
%X To estimate and analyze evoked potentials (EP) obtained from Imitation of Natural Reading stimulus paradigm, single-sweep EP based on wavelet transform was compared with averaged EP in time and frequency domain. And the localization of brain functional source was applied. The results showed that averaged EP might lose some essential components and the analysis of brain functional source localization could only reflect the static process of equivalent brain functional source. But single-sweep EP based on wavelet transform with the localization of brain functional source could obtain ample information of EP, and reflect real-time dynamic process of brain functional source. It suggested that time-frequency analysis of single-sweep EP based on wavelet transform is a new effective method processing electroencephalograph signal.
%K Wavelet transform
%K Evoked potentials
%K Time-frequency analysis
%K Brain functional source<br>小波变换
%K 诱发电位
%K 时频分析
%K 脑功能源
%K 电信号
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=E0C9D9BBED813D6674AC13E942EAC86D&aid=8603F7F2D004E46C&yid=D0E58B75BFD8E51C&vid=A04140E723CB732E&iid=38B194292C032A66&sid=38685BC770C663F2&eid=3D9746C06EC12B45&journal_id=1000-6737&journal_name=生物物理学报&referenced_num=0&reference_num=14