Automated analysis of prerecorded evoked electromyographic activity from rat muscle |
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| Affiliation: | 1. Department of Electrical and Electronic Engineering, Sheffield City Polytechnic, Pond Street, Sheffield S1 1WB, UK;2. Department of Biological Sciences, Sheffield City Polytechnic, Pond Street, Sheffield S1 1WB, UK;1. Department of Orthopaedics, University of Utah, Salt Lake City, UT, USA;2. Department of Biomedical Engineering, University of Utah, Salt Lake City, UT, USA;3. Department of Orthopaedic Surgery, Henry Ford Health System, Detroit, MI, USA;4. Department of Physical Therapy and Athletic Training, University of Utah, Salt Lake City, UT, USA;5. Department of Mechanical Engineering, University of Utah, Salt Lake City, UT, USA;1. Faculty of Sport and Health Science, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga 525-8577, Japan;2. Faculty of Kinesiology, The University of Calgary, 2500 University Drive, NW, Calgary, AB T2N 1N4, Canada;1. Technische Universität Ilmenau, Technical Mechanics Group, 98693 Max-Planck-Ring 12, Ilmenau, Germany;2. Technische Universität Ilmenau, Biomechatronics Group, 98693 Max-Planck-Ring 12, Ilmenau, Germany;3. Friedrich-Schiller-Universität Jena, Institute of Systematic Zoology and Evolutionary Biology with Phyletic Museum, 07743 Erbertstraße 1, Jena, Germany |
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| Abstract: | 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. |
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