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Concentric needle s...
Concentric needle single fiber electromyography : Comparative jitter on voluntary-activated and stimulated Extensor Digitorum Communis
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Kouyoumdjian, Joao Aris (author)
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- Stålberg, Erik V. (author)
- Uppsala universitet,Institutionen för neurovetenskap
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(creator_code:org_t)
- Elsevier BV, 2008
- 2008
- English.
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In: Clinical Neurophysiology. - : Elsevier BV. - 1388-2457 .- 1872-8952. ; 119:7, s. 1614-1618
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Objective: To compare the jitter values in voluntarily activated (v-CNE) and stimulated (s-CNE) techniques for Extensor Digitorum Communis muscle using a disposable concentric needle electrode (CNE). Quantifying jitter using a CNE in conjunction with a stimulated technique has not been reported previously. Methods: Forty-one normal subjects were studied, 15 male and 26 female with a mean age of 34.1 +/- 10.7 years (19-55). The jitter values were expressed as the mean consecutive difference (MCD) of 20 analyzed potential pairs using v-CNE and 30 isolated potentials using s-CNE. Results: The mean MCD (n = 41) was 23.0 +/- 2.8 mu s for v-CNE and 18.2 +/- 2.2 mu s for s-CNE. The mean jitter of all recorded potentials was 22.9 +/- 6.7 mu s for v-CNE (n = 820) and 18.3 +/- 5.2 mu s for s-CNE (n = 1230). Upper limits for the 18th (v-CNE) and 27th highest (s-CNE) MCD were 38.9 and 30 mu s, respectively (95% confidence limit). The jitter decrease in s-CNE compared to v-CNE was 1:0.79. Conclusions: Our findings of the jitter values using CNE were similar to other published reports using the voluntarily activated technique; however, these are the first described for the stimulated technique using CNE. Significance: The present study confirms that CNE can be used for the stimulated jitter acquisition and measurement, although certain precautions must be taken regarding signal quality, e.g., observing minimal summation.
Keyword
- single fiber electromyography
- jitter
- concentric needle electrode
- Extensor Digitorum Communis
- MEDICINE
- MEDICIN
Publication and Content Type
- ref (subject category)
- art (subject category)
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