Reference values for jitter recorded by concentric needle electrodes in healthy controls: A multicenter study.

Journal Article (Journal Article;Multicenter Study)

INTRODUCTION: The aim of this study was to create reference values for jitter measured with concentric needle electrodes. METHODS: Operators worldwide contributed recordings from orbicularis oculi (OO), frontalis (FR), and extensor digitorum (ED) muscles in healthy controls. Criteria for acceptable signal quality were agreed upon in advance. Fifteen or 20 recordings of acceptable quality from each muscle were required for voluntary and electrical stimulation recordings, respectively. RESULTS: Recordings from 59 to 92 subjects were obtained for each muscle and activation type. Outlier limits for mean consecutive difference and individual jitter data for voluntary activation were: OO, 31 and 45 µs; FR, 28 and 38 µs; ED, 30 and 43 µs; and for electrical stimulation they were: OO, 27 and 36 µs; FR, 21 and 28 µs; ED, 24 and 35 µs. CONCLUSION: Reference jitter values from concentric needle electrode recordings were developed from signals of defined quality while seeking to avoid creating supernormal values.

Full Text

Duke Authors

Cited Authors

  • Stålberg, E; Sanders, DB; Ali, S; Cooray, G; Leonardis, L; Löseth, S; Machado, F; Maldonado, A; Martinez-Aparicio, C; Sandberg, A; Smith, B; Widenfalk, J; Aris Kouyoumdjian, J

Published Date

  • March 2016

Published In

Volume / Issue

  • 53 / 3

Start / End Page

  • 351 - 362

PubMed ID

  • 26112058

Electronic International Standard Serial Number (EISSN)

  • 1097-4598

Digital Object Identifier (DOI)

  • 10.1002/mus.24750


  • eng

Conference Location

  • United States