Mathematical model of myoelectric signals obtained during locomotion

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Original languageEnglish
Pages (from-to)1403-1404
Journal / PublicationAnnual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) - Proceedings
Issue number2
Publication statusPublished - 1995
Externally publishedYes


TitleProceedings of the 1995 IEEE Engineering in Medicine and Biology 17th Annual Conference and 21st Canadian Medical and Biological Engineering Conference. Part 2 (of 2)
CityMontreal, Can
Period20 - 23 September 1995


An analytical expression for the myoelectric signal was derived using the integral pulse frequency and amplitude modulation (IPFAM) approach. The results indicate that, in the frequency domain, the general envelope of the EMG spectrum is affected primarily by the motor unit action potential (MUAP) and its interaction with the pulse amplitude modulation (PAM) and pulse frequency modulation (PFM) processes. Furthermore, the component associated with force modulation co-exists at its modulating frequency with factors related to the MUAP. Therefore, the conventional low-pass filtering is not adequate for reconstructing dynamic muscular force signals from nonstationary myoelectric signals obtained during locomotion.

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