基于小波变换分析兔体感诱发电位。

Based on wavelet transform to analyze rabbit somatosensory evoked potential.

作者信息

Li Z, Liu S, Xie Z, Mou Y

机构信息

College of Bio-information, Chongqing University of Post and Telecommunication, Chongqing 400065 China. TEL:+ 8602362461772 E-mail:

出版信息

Conf Proc IEEE Eng Med Biol Soc. 2005;2005:2668-71. doi: 10.1109/IEMBS.2005.1617019.

DOI:10.1109/IEMBS.2005.1617019

PMID:17282788

Abstract

Rabbits were narcotized and stimulated by 0.5Hz electric pulse. Potential of scalp was sampled at 3764Hz. Wave components of rabbit somatosensory evoked potential (SEP) can be located precisely through the method of continuous wavelet transform (CWT). Frequency feature of SEP can also be analyzed by CWT. The technique of continuous wavelet transform, which can project a one-dimension signal into a two-dimension time-frequency space, will become a useful method to process medical electronic signal. Key words: wavelet transform, somatosensory evoked potential, single-trial.

摘要

将兔子麻醉后，用0.5Hz的电脉冲进行刺激。头皮电位以3764Hz的频率进行采样。通过连续小波变换（CWT）方法，可以精确地定位兔子体感诱发电位（SEP）的波成分。SEP的频率特征也可以通过CWT进行分析。连续小波变换技术可以将一维信号投影到二维时频空间，将成为处理医学电子信号的一种有用方法。关键词：小波变换，体感诱发电位，单次试验。