Abstract
The definitions and physiological implications of the classical amplitude (average rectified value or root mean square) and spectral features (mean or median frequency) of a single EMG channel are introduced together with the concepts of Fourier analysis and the spectrum of a signal. The spatial distribution of these quantities along an electrode array placed above the muscle is discussed. In addition, the importance of deriving these quantities from the sEMG signal collected from an area away from the innervation zone of the muscle is explained.
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© 2012 Springer-Verlag Italia
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Barbero, M., Merletti, R., Rainoldi, A. (2012). Features of the Single-Channel sEMG Signal. In: Atlas of Muscle Innervation Zones. Springer, Milano. https://doi.org/10.1007/978-88-470-2463-2_5
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DOI: https://doi.org/10.1007/978-88-470-2463-2_5
Publisher Name: Springer, Milano
Print ISBN: 978-88-470-2462-5
Online ISBN: 978-88-470-2463-2
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