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| 基于多分辨分析与连续小波变换提取和分析兔体感诱发电位 | |
| 引用本文： | 李章勇,赵志强,刘圣蓉,谢正祥,陆杰.基于多分辨分析与连续小波变换提取和分析兔体感诱发电位[J].生物医学工程学杂志,2007,24(3):504-508. |
| 作者姓名： | 李章勇 赵志强 刘圣蓉 谢正祥 陆杰 |
| 作者单位： | 1. 重庆邮电大学,生物信息学院,重庆,400065 2. 重庆医科大学,生物医学工程研究室,重庆,400016 3. 重庆医科大学,生理学教研室,重庆,400016 |
| 基金项目： | 国家自然科学基金;重庆邮电学院校科研和教改项目 |
| 摘 要： | 研究单次提取兔体感诱发电位,并定位和分析诱发电位波形成分。麻醉兔,以0.5Hz频率电脉冲刺激兔下肢隐神经,3764Hz采样率收集兔头皮电位。采用一维多分辨分析提取兔体感诱发电位,并用连续小波变换定位和分析诱发电位波形成分。单次诱发电位的小波变换与叠加平均诱发电位比较,表明Daubechies小波多分辨分析可以单次提取诱发电位。连续小波变换能够精确定位诱发电位中波形成分,并可采用连续小波变换分析诱发成分的频域特性。连续小波变换技术把一维时域信号投影到二维时频空间研究将成为医学信号处理的一个有用方法。 |
| 关 键 词： | 体感诱发电位 小波变换 单次提取 多分辨分析 快速傅立叶变换 |
| 修稿时间： | 2004-12-282005-05-01 |
Extracting and Analyzing Rabbit Somatosensory Evoked Potential on the Basis of Continuous Wavelet Transform and Multi-resolution Analysis |
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| Li Zhangyong,Zhao Zhiqiang,Liu Shengrong,Xie Zhengxiang,Lu Jie.Extracting and Analyzing Rabbit Somatosensory Evoked Potential on the Basis of Continuous Wavelet Transform and Multi-resolution Analysis[J].Journal of Biomedical Engineering,2007,24(3):504-508. | |
| Authors: | Li Zhangyong Zhao Zhiqiang Liu Shengrong Xie Zhengxiang Lu Jie |
| Institution: | 1.College of Bio-information, Chongqing University of Posts and Telecommunications, Chongqing 400065 ,China; 2.Dept. of Biomedical Engineering, Chongqing University of Medical Sciences, Chongqing 400016,China; 3.Dept. of Physiology, Chongqing University of Medical Sciences, Chongqing 400016,China |
| Abstract: | This study was directed at extracting the rabbit somatosensory evoked potential(SEP),locating and analyzing the waveform of rabbit SEP.The rabbit was narcotized and stimulated by 0.5Hz electric pulse.Potential of scalp was sampled at 3 764 Hz.Rabbit somatosensory evoked potential was extracted by one-dimension multi-resolution analysis,and continuous wavelet transform(CWT)was employed to locate and analyze the wave of SEP.The study results showed that Single-trail SEP can be extracted by Daubechies wavelet,when wavelet transform result of single-trail was compared with the result of averaged SEP.Wave component of SEP can be located precisely through the method of continuous wavelet transform.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,shows good application prospect of processing medical electronic signal. |
| Keywords: | Somatosensory evoked potential(SEP)Wavelet transform Single-trial Multi-resolution analysis Fast Fourier transform |
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