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  • Title: [A method for analysis of muscle activity during electric stimulation].
    Author: Eck U, Vossius G.
    Journal: Biomed Tech (Berl); 2002; 47 Suppl 1 Pt 2():517-20. PubMed ID: 12465223.
    Abstract:
    The measurement of the surface-EMG during electrical stimulation requires the suppression of the stimulus pulse close to the source. This is necessary because of the discharge currents spreading within the human body caused by the stimulation pulse and the drift effects at the electrodes distorting the EMG-signal. A measurement-system will be presented, which splits the EMG in a detection and a processing path. A special converter keeps the base line at zero level. The detection path sets the gain of the recording amplifier and identifies the stimulation pulse to control its suppression. The processing of the EMG is conducted in the main path way. By these means the EMG including M-wave is undistorted and unbiased presented. The results will be discussed taking the physiology relevance into account.
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