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Concentric needle jitter on voluntary activated frontalis in 20 healthy subjects
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Clinical Neurophysiology.
2013 (English)In: Muscle and Nerve, ISSN 0148-639X, E-ISSN 1097-4598, Vol. 47, no 3, 440-442 p.Article in journal (Refereed) Published
Abstract [en]

Introduction: Normative data for jitter parameters using a disposable concentric needle have been described in a few studies. Methods: Jitter, expressed as the mean consecutive difference (MCD), was measured in the frontalis muscle in 20 subjects by voluntary contraction. Results: Mean MCD for individual studies (20, Gaussian), all potentials (400, non-Gaussian), and 18th highest value (20, Gaussian) were 19.9 +/- 2.9 s, 19.9 +/- 6.6 s, and 26.9 +/- 4.4 s, respectively. Conclusion: The suggested upper normal limit for mean MCD is 26 s and for outliers is 36 s.

Place, publisher, year, edition, pages
2013. Vol. 47, no 3, 440-442 p.
Keyword [en]
concentric needle electrode, frontalis, jitter, single-fiber electromyography, voluntary jitter
National Category
Medical and Health Sciences
URN: urn:nbn:se:uu:diva-197989DOI: 10.1002/mus.23710ISI: 000315401500019OAI: oai:DiVA.org:uu-197989DiVA: diva2:615005
Available from: 2013-04-08 Created: 2013-04-08 Last updated: 2013-04-08Bibliographically approved

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Stålberg, Erik V.
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