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Cortico-Muscular Coherence Is Reduced Acutely Post-stroke and Increases Bilaterally During Motor Recovery: A Pilot Study

Authors :
Richard Krauth
Johanna Schwertner
Susanne Vogt
Sabine Lindquist
Michael Sailer
Almut Sickert
Juliane Lamprecht
Serafeim Perdikis
Tiffany Corbet
José del R. Millán
Hermann Hinrichs
Hans-Jochen Heinze
Catherine M. Sweeney-Reed
Source :
Frontiers in Neurology, Vol 10 (2019)
Publication Year :
2019
Publisher :
Frontiers Media S.A., 2019.

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.

Details

Language :
English
ISSN :
16642295
Volume :
10
Database :
Directory of Open Access Journals
Journal :
Frontiers in Neurology
Publication Type :
Academic Journal
Accession number :
edsdoj.8101477a68bd4a38aa40aa48df276135
Document Type :
article
Full Text :
https://doi.org/10.3389/fneur.2019.00126