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2017 | OriginalPaper | Buchkapitel

On Correlation Between the Neural Drive to Muscles and Multichannel Surface Electromyogram Amplitudes

verfasst von : Damjan Karlatec, Aleš Holobar

Erschienen in: Converging Clinical and Engineering Research on Neurorehabilitation II

Verlag: Springer International Publishing

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Abstract

Amplitude of surface electromyogram (EMG) has often been used as a measure of neural drive sent to skeletal muscle, especially for assessment of muscle co-activations. In this study, we analyze correlation between the multichannel EMG amplitudes and cumulative motor unit spike train (CST) as assessed by decomposition of surface EMG of writ flexors and extensors in 27 Parkinsonian tremor patients. We demonstrate that in involuntary contractions surface EMG amplitudes vary significantly with the location of the measuring electrodes and that the first principal component of the EMG amplitudes correlates with the CST only in about one third of cases studied and when its relative energy is high.

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Literatur
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Zurück zum Zitat A. Holobar, M.A. Minetto, D. Farina, Accurate identification of motor unit discharge patterns from high-density surface EMG and validation with a novel signal-based performance metric. J. Neural Eng. 11(1), 016008 (2014)CrossRef A. Holobar, M.A. Minetto, D. Farina, Accurate identification of motor unit discharge patterns from high-density surface EMG and validation with a novel signal-based performance metric. J. Neural Eng. 11(1), 016008 (2014)CrossRef
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Zurück zum Zitat J.A. Gallego et al., The phase difference between neural drives to antagonist muscles in essential tremor is associated with the relative strength of supraspinal and afferent input. J. Neurosci. 10, 35(23), 8925–37 (2015) J.A. Gallego et al., The phase difference between neural drives to antagonist muscles in essential tremor is associated with the relative strength of supraspinal and afferent input. J. Neurosci. 10, 35(23), 8925–37 (2015)
Metadaten
Titel
On Correlation Between the Neural Drive to Muscles and Multichannel Surface Electromyogram Amplitudes
verfasst von
Damjan Karlatec
Aleš Holobar
Copyright-Jahr
2017
DOI
https://doi.org/10.1007/978-3-319-46669-9_220

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