On the shape of the normal turns--amplitude cloud.


Journal Article

Factors that affect the shape of the so-called "normal cloud" of the turns and amplitude measurements of the electromyographic interference pattern are investigated. As the force of voluntary contraction increases from low to moderate levels, the number of turns in the signal increase faster than does the mean amplitude change between turns. This results in a cloud that is concave downward. At higher force levels, the pattern is reversed. The overall shape of the cloud thus depends on the maximum effort at which recordings are made, which is determined by the procedure of muscle activation.

Full Text

Duke Authors

Cited Authors

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

Published Date

  • January 1, 1991

Published In

Volume / Issue

  • 14 / 1

Start / End Page

  • 8 - 13

PubMed ID

  • 1992300

Pubmed Central ID

  • 1992300

International Standard Serial Number (ISSN)

  • 0148-639X

Digital Object Identifier (DOI)

  • 10.1002/mus.880140103


  • eng

Conference Location

  • United States