Simulation and analysis of the electromyographic interference pattern in normal muscle. Part I: Turns and amplitude measurements.


Journal Article

The electromyographic (EMG) interference pattern (IP) was simulated by adding together motor unit action potentials (MUAPs) of different sizes that had been recorded by a concentric needle EMG electrode. The number of turns (NT) of the simulated IP increased with the number of MUAP discharges. The mean amplitude (MA) difference between successive turns in the IP increased when large amplitude MUAPs were added. Our analysis demonstrates that the MA of the IP is determined mainly by the amplitude of large MUAPs in the signal and that large amplitude spikes are more likely to be generated by single large amplitude MUAPs than by summation of several small amplitude MUAPs.

Full Text

Duke Authors

Cited Authors

  • Nandedkar, SD; Sanders, DB; Stålberg, EV

Published Date

  • June 1, 1986

Published In

Volume / Issue

  • 9 / 5

Start / End Page

  • 423 - 430

PubMed ID

  • 3724788

Pubmed Central ID

  • 3724788

International Standard Serial Number (ISSN)

  • 0148-639X

Digital Object Identifier (DOI)

  • 10.1002/mus.880090507


  • eng

Conference Location

  • United States