【摘要】 采用IBM-PO机作多路脑电功率谱分析系统,无需对微机作任何改动,只要将一块简单的数据获取接口板插入微机的I/O扩展槽中即可,该系统能采集和分析8路脑电,谱线分辨率为0.25Hz,频谱分析范围0～63.75Hz(加数字滤波后为0～43Hz),是一理想的常规脑电研究工具。更多还原

【Abstract】 A multichannel system of power spectral analysis of EEG signal by means ofIBM-PC with a sampling frequency of 128 Hz and a resolution of 0.25 Hz is descri-bed. The system program which includes a 23rd order 43 Hz low-pass FIR filtertreated with Hamming Window and a kind of averaging method of smoothing perio-dogram using 50% overlapping data segments and Hamming window for FFT hasbeen developed.更多还原