The human motor cortex contributes to gravity compensation to maintain posture and during reaching

Author:

Hardesty Russell L.1ORCID,Ellaway Peter H.2,Gritsenko Valeriya1ORCID

Affiliation:

1. Departments of Human Performance and Neuroscience, Rockefeller Neuroscience Center, West Virginia University, Morgantown, West Virginia

2. Department of Medicine, Imperial College London, London, United Kingdom

Abstract

Animal studies suggest that the corticospinal tract and its collaterals are crucial for producing postural adjustments that accompany movement in limbs other than the moving limb. Here we provide evidence for a similar control schema for both arm posture maintenance and gravity compensation during movement of the same limb. The observed interplay between the postural and movement control signals within the corticospinal tract may help explain the underlying neural motor deficits after stroke.

Funder

HHS | NIH | National Institute of General Medical Sciences

HHS | NIH | National Institute on Aging

HHS | NIH | National Institute of Biomedical Imaging and Bioengineering

National Science Foundation

New York State Department of Health

Stratton VA Medical Center, Albany VAMC

Publisher

American Physiological Society

Subject

Physiology,General Neuroscience

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