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Methods Inf Med 2000; 39(02): 125-129
DOI: 10.1055/s-0038-1634281
DOI: 10.1055/s-0038-1634281
Original Article
Non-stationary Myoelectric Signals and Muscle Fatigue
Further Information
Publication History
Publication Date:
07 February 2018 (online)
Abstract:
A mathematical derivation for the mean frequency of a myoelectric signal (MES) is provided based on an amplitude modulation model for non-stationary MES. With this derivation, it is shown that mean frequency estimates of stationary and non-stationary myoelectric signals theoretically are not significantly different in a physiologically practical context. While this prediction is confirmed via a computer simulation, it is refuted with empirical evidence. Regardless, it is shown in a final study that mean frequency is capable of tracking a downward shift in the power spectrum with fatigue even in non-stationary myoelectric signals.
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REFERENCES
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