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Cortico-muscular coherence is reduced acutely post-stroke and increases bilaterally during motor recovery: a pilot study

Krauth, Richard and Schwertner, Johanna and Vogt, Susanne and Lindquist, Sabine and Michael, Sailer and Almut, Sickert and Lamprecht, Julian and Perdikis, Serafeim and Corbet, Tiffany and Millan, Jose del R and Hinrichs, Hermann and Heinze, Hans-Jochen and Sweeney-Reed, Catherine (2019) 'Cortico-muscular coherence is reduced acutely post-stroke and increases bilaterally during motor recovery: a pilot study.' Frontiers in Neurology. ISSN 1664-2295

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Abstract

Motor recovery following stroke is believed to necessitate alteration in functional connectivity between cortex and muscle. Cortico-muscular coherence has been proposed as a potential biomarker for post-stroke motor deficits, enabling a quantification of recovery, as well as potentially indicating the regions of cortex involved in recovery of function. We recorded simultaneous EEG and EMG during wrist extension from healthy participants and patients following ischaemic stroke, evaluating function at three time points post-stroke. EEG–EMG coherence increased over time, as wrist mobility recovered clinically, and by the final evaluation, coherence was higher in the patient group than in the healthy controls. Moreover, the cortical distribution differed between the groups, with coherence involving larger and more bilaterally scattered areas of cortex in the patients than in the healthy participants. The findings suggest that EEG–EMG coherence has the potential to serve as a biomarker for motor recovery and to provide information about the cortical regions that should be targeted in rehabilitation therapies based on real-time EEG.

Item Type: Article
Uncontrolled Keywords: cortico-muscolar coherence, EEG, EMG, Stroke, Rehabili tation, Wrist
Subjects: R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Depositing User: Elements
Date Deposited: 04 Jun 2019 15:21
Last Modified: 04 Jun 2019 16:15
URI: http://repository.essex.ac.uk/id/eprint/24696

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