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Reference values for jitter recorded by concentric needle electrodes in healthy controls: A multicenter study.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Clinical Neurophysiology.
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2016 (English)In: Muscle and Nerve, ISSN 0148-639X, E-ISSN 1097-4598, Vol. 53, no 3, 351-362 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2016. Vol. 53, no 3, 351-362 p.
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URN: urn:nbn:se:uu:diva-278200DOI: 10.1002/mus.24750ISI: 000369837200002PubMedID: 26112058OAI: oai:DiVA.org:uu-278200DiVA: diva2:906235
The Swedish Brain Foundation
Available from: 2016-02-24 Created: 2016-02-24 Last updated: 2016-03-23Bibliographically approved

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Stålberg, ErikSandberg, ArneWidenfalk, Johan
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