摘要
脑电(EEG)信号是一种产生机理相当复杂的人体生理信号,具有重要的科学研究和临床诊断价值。本文针对脑电信号非平稳性特点,利用小波变换的方法实现了对采集到的脑电信号进行滤波处理;利用小波包分析的方法实现了对脑电节律(δ、θ、α、β)的提取及对脑电的功率谱分析。
EEG (Electroencephalogram) signal is a complicated efectrophysiofogy signal of a human, which has been widely used in medical researches and clinical diagnoses. In this paper, based on the nonstationarity of clinical EEG signals, wavelet transformation is used to filter EEG signal and wavelet packet analysis is used to detect EEG rhythm(δ, θ、α、β) and to analyze EEG power spectrum.
出处
《医疗设备信息》
2007年第7期7-10,共4页
Information of Medical Equipment
关键词
脑电图
小波变换
脑电功率谱分析
EEG
wavelet transformation
EEG power spectrum analysis