High gamma coherence between task-responsive sensory-motor cortical regions in a motor reaction-time task

Author:

Anand Shashank1ORCID,Cho Hohyun23ORCID,Adamek Markus34,Burton Harold4,Moran Daniel124ORCID,Leuthardt Eric1234,Brunner Peter1235ORCID

Affiliation:

1. Department of Biomedical Engineering, McKelvey School of Engineering, Washington University in St. Louis, St. Louis, Missouri, United States

2. Department of Neurosurgery, Washington University in St. Louis School of Medicine, St. Louis, Missouri, United States

3. National Center for Adaptive Neurotechnologies, St. Louis, Missouri, United States

4. Department of Neuroscience, Washington University in St. Louis School of Medicine, St. Louis, Missouri, United States

5. Department of Neurology, Albany Medical College, Albany, New York, United States

Abstract

Motor action after auditory stimulus elicits high gamma responses in sensory-motor and auditory cortex, respectively. We show that high gamma coherence reliably and greatly increased during motor response, but not after auditory stimulus. Underlying high gamma power could not explain high gamma coherence. Our results indicate that high gamma coherence is a physiologically distinct sensory-motor phenomenon that may serve as an indicator of increased synaptic communication on short timescales (∼1 s).

Funder

Fondazione Neurone

HHS | NIH | National Institute of Biomedical Imaging and Bioengineering

HHS | NIH | National Institute of Neurological Disorders and Stroke

WashU | McDonnell Center for Systems Neuroscience

Publisher

American Physiological Society

Subject

Physiology,General Neuroscience

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