Attenuation of corticomuscular coherence with additional motor or non-motor task

Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology
Ashley N JohnsonMinoru Shinohara

Abstract

The study aimed to compare beta (15-30 Hz) band corticomuscular coherence between a unilateral hand motor task and concurrent motor or non-motor tasks. Additionally, we examined the potential associations between corticomuscular coherence and fine motor performance. Ten healthy young right-handed adults performed unilateral, bilateral, concurrent motor-cognitive, and cognitive tasks. Electroencephalogram and electromyogram were recorded from the primary motor cortex and the first dorsal interosseous muscle, respectively, during steady contractions. Corticomuscular beta band coherence decreased (P<0.05) from the unilateral motor task with the right hand to the same extent in both the bilateral motor and motor-cognitive tasks. A decrease in corticomuscular coherence with concurrent tasks was also observed for the left hand (P<0.05). Beta band coherence was not associated with motor output steadiness or accuracy. Beta band coherence decreased during concurrent tasks irrespective of the additional task, most likely due to divided attention. There was no association between beta band coherence and fine motor performance during steady contractions. This study supports that attention divided by an additional motor or non-motor task in...Continue Reading

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Citations

Jun 7, 2013·Annals of Biomedical Engineering·David J ClarkEvangelos A Christou
Jan 17, 2012·Journal of Neuroengineering and Rehabilitation·Ashley N JohnsonMinoru Shinohara
Apr 24, 2014·Journal of Computational Neuroscience·Yao RongYanjun Zeng
Sep 11, 2012·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Nikhil V Divekar, Lester R John
Apr 16, 2011·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Manyoel LimChun Kee Chung
Mar 13, 2014·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Manyoel LimChun Kee Chung
Sep 15, 2014·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Katja AiraksinenEero Pekkonen
Apr 20, 2017·Frontiers in Human Neuroscience·Takashi YoshidaMilos R Popovic
Oct 7, 2015·Neurorehabilitation and Neural Repair·William F CusackLewis A Wheaton
Jan 10, 2012·Journal of Applied Physiology·Ashley N Johnson, Minoru Shinohara
Dec 8, 2019·Annals of Biomedical Engineering·Long LiJue Wang
Apr 6, 2019·Frontiers in Human Neuroscience·Jinbiao LiuHonghai Liu

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