基于抗交叉串扰自适应噪声抵消的诱发脑电信号提取研究  

Evoked Potentials Extraction Based on Cross-talk ResistantAdaptive Noise Cancellation

作　　者：曾庆宁 李凌 刘庆华 尧德中[2] 

机构地区：[1]桂林电子学院通信与信息工程系,桂林541004 [2]电子科技大学生命科学与技术学院,成都610054

出　　处：《生物医学工程学杂志》2004年第3期410-415,共6页Journal of Biomedical Engineering

基　　金：国家自然科学基金资助项目 ( 60 2 72 0 3 8);广西自然科学基金资助项目 ( 0 14 10 44

摘　　要：由于诱发脑电信号比自发脑电信号的幅度小得多 ,传统的叠加平均方法提取诱发脑电信号需要大量的重复刺激 ,如何通过少量的刺激次数来获取诱发脑电信号是一个重要的研究课题。本文提出了一种抗交叉串扰自适应噪声抵消方法来提取诱发脑电信号 ,同时引进滤波技术并结合常用的叠加技术 ,使提取诱发脑电信号所需的重复刺激次数大幅减少 ,仿真实验说明 。As Evoked Potentials are much lower in amplitude with respect to the on-going EEC, many trigger-related signals are needed for common averaging technique to enable the extraction of single-trail evoked potentials(EP).How to acquire EP through fewer evocations is an important research project. This paper proposes a cross-talk resistant adaptive noise cancellation method to extract EP. Together with the use of filtering technique and the common averaging technique, the present method needs much less evocations to acquire EP signals. According to the simulating experiment, it needs only several evocations or even only one evocation to get EP signals in good quality.

关 键 词：诱发脑电信号 自发脑电信号 自适应 交叉串扰 噪声 滤波技术 叠加技术 仿真实验 

分 类 号：R318.04[医药卫生—生物医学工程]