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Jitter recordings with concentric needle electrodes
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Clinical Neurophysiology.
2009 (English)In: Muscle and Nerve, ISSN 0148-639X, E-ISSN 1097-4598, Vol. 40, no 3, 331-339 p.Article, review/survey (Refereed) Published
Abstract [en]

Neuromuscular jitter is generally recorded with a single fiber (SF) electromyography (EMG) electrode. Due to concern about using reusable needle electrodes, an acceptable alternative for the SF electrode has been sought. This is a review of the issues involved in using disposable concentric needle (CN) electrodes to measure jitter. Signals recorded with CN electrodes frequently represent the summation of many single fiber action potentials, which will decrease the apparent jitter. The influence of these artifacts on the final result also depends on the analysis method. Reference values obtained with CN electrodes correlate with SF EMG values, but they are a few microseconds lower. Overall results show that the CN method is a good alternative to SFEMG and will facilitate the use of jitter analysis. The results must be interpreted with caution, particularly in borderline cases, but they may be acceptable for clinical use when SF electrodes cannot be used.

Place, publisher, year, edition, pages
2009. Vol. 40, no 3, 331-339 p.
Keyword [en]
jitter, neuromuscular transmission, SFEMG, concentric needle electrode, EMG
National Category
Physiology
Research subject
Clinical Neurophysiology
Identifiers
URN: urn:nbn:se:uu:diva-120673DOI: 10.1002/mus.21424ISI: 000269701500001PubMedID: 19705424OAI: oai:DiVA.org:uu-120673DiVA: diva2:303807
Available from: 2010-03-15 Created: 2010-03-15 Last updated: 2011-01-19Bibliographically approved

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