Effect of increased motor unit action potential duration on the amplitude and mean power frequency of the electromyogram

Andrew J. Fuglevand, David A. Winter, Aftab E. Patla, Dan Stashuk

Research output: Contribution to journalConference article

4 Scopus citations

Abstract

A motor unit (MU) pool model was used to simulate surface EMG (electromyogram) for conditions of increased motor unit action potential (MUAP) durations at three levels of contraction. Full-wave rectified average EMG (AEMG) increased and mean power frequency (MPF) decreased with increased MUAP duration. The degree of change in AEMG and MPF depends on the contraction level. However, the relation between change in AEMG and change in MPF was independent of contraction level and may be useful in isolating the effect of increased MUAP durations on EMG amplitude during fatiguing contractions.

Original languageEnglish (US)
Pages (from-to)953-954
Number of pages2
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume11 pt 3
StatePublished - Nov 1 1989
Externally publishedYes
EventImages of the Twenty-First Century - Proceedings of the 11th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 1 - Seattle, WA, USA
Duration: Nov 9 1989Nov 12 1989

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

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