基于相关阈值法的脑电40Hz事件相关电位检测系统

A 40Hz Event Re1ated Potential Detecting System Based on Correlation Threshold Method

详细介绍了我们建立的一套 40 Hz ERP(4 0 Hz事件相关电位 )信号检测系统 ,该系统使用边缘特性最好的椭圆窄带滤波器提取窄带信号 ,采用我们提出的相关域值法很好地剔除了肌电干扰 ,并在微机上实现了实验自动化和结果自动统计。这个系统是有关 40 Hz ERP的完善的独立实验系统 ,它为认知科学。

A 40Hz event related potential(ERP)detecting system is introduced here. The system employs the elliptic—type filters which have excellent edge features to extract signals of narrow band frequency . It exploits the correlation—threshold method proposed by us to cancel the musc1e artifacts. We also realizes the automatic control of experiment procedure and statistical data processing in microcomputer.