诱发电位的处理技术

The Disposing Techniques of Evoked Potentials

提出对诱发电位新的处理方法。内容包括从叠加、诱发电位振幅、诱发电位潜伏期、诱发电位记录和诱发电位发生器所涉及的叠加技术、记录数据采样技术和滤波技术 4方面。信号滤波和周期性叠加的技术可以增强诱发电位辨别率。为检测波峰潜伏期 ,可在连续波峰之间标识出潜伏期变化技术应用到商用诱发电位仪上。现代数字式记录仪是由感觉刺激器 ,具有模拟滤波的记录振幅 ,模拟数字转换器 ,数字信号叠加 ,显示和存储系统几部分 (过程 )组成。采样获取作用的发展趋势是以不同时间不同电压设置和不同采样率 ,多通道对刺激器所诱发的电位进行分析。随着数字滤波在模数转换上的应用 。

This paper is to bring forward the new disposing techniques of evoked potentials which include four aspect techniques of the averaging,the recording,digital sampling and filters about the averaging,evoked potential amplitude,evoked potential latency,evoked potential recording,and evoked potential generatiors.The technique of the averaging including signal filtering and a periodic averaging,can enhance EP dedection. The commercial EP machines also plot changes in latency between serial EP studies in order to detect trends in peak latency. The modern digital EP recording device consists of sensory stimator, recording amplifiers with analog filters,an analog-to-digital converter, a digital signal averager,and a display and storage system.A sample-and-hold function is one of the recent developments which uses EP collectors that provide simultaneous recording with multiple channels employing different time and voltage scales and sampling rates.The EP data may be further processed following A-D conversion by digital filters.