Basarab-Horwath I, Dewhurst D G, Dixon R, Meehan A S, Odusanya S
Department of Electrical and Electronic Engineering, Sheffield City Polytechnic, UK.
J Biomed Eng. 1989 Mar;11(2):103-6. doi: 10.1016/0141-5425(89)90116-7.
An automated microprocessor-based data acquisition and analysis system has been developed specifically to quantify electromyographic (EMG) activity induced by the convulsant agent catechol in the anaesthetized rat. The stimulus and EMG response are recorded on magnetic tape. On playback, the stimulus triggers a digital oscilloscope and, via interface circuitry, a BBC B microcomputer. The myoelectric activity is digitized by the oscilloscope before being transferred under computer control via a RS232 link to the microcomputer. This system overcomes the problems of dealing with signals of variable latency and allows quantification of latency, amplitude, area and frequency of occurrence of specific components within the signal. The captured data can be used to generate either signal or superimposed high resolution graphic reproductions of the original waveforms. Although this system has been designed for a specific application, it could easily be modified to allow analysis of any complex waveform.
已开发出一种基于微处理器的自动化数据采集与分析系统，专门用于量化麻醉大鼠中惊厥剂儿茶酚诱发的肌电图（EMG）活动。刺激和EMG反应记录在磁带上。回放时，刺激触发数字示波器，并通过接口电路触发一台BBC B微型计算机。肌电活动在通过RS232链路在计算机控制下传输到微型计算机之前，先由示波器进行数字化处理。该系统克服了处理潜伏期可变信号的问题，并能够对信号中特定成分的潜伏期、幅度、面积和出现频率进行量化。捕获的数据可用于生成原始波形的信号或叠加的高分辨率图形再现。尽管该系统是为特定应用设计的，但可以很容易地进行修改，以允许分析任何复杂波形。
