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Victor R. Barradas on Muck Rack

Victor R. Barradas

As seen in: BioRxiv
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Articles

Self-organizing recruitment of compensatory areas maximizes residual motor performance post-stroke

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By Kevin Lee, Victor R. Barradas, Nicolas Schweighofer
| BioRxiv
Abstract Whereas the orderly recruitment of compensatory motor cortical areas after stroke depends on the size of the motor cortex lesion affecting arm and hand movements, the mechanisms underlying this reorganization are unknown. Here, we hypothesized that the recruitment of compensatory areas results from the motor system's goal to optimize performance given the anatomical constraints before and after the lesion.
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Force Reserve Predicts Compensation in Reaching Movement with Induced Shoulder Strength Deficit

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By Germain Faity, Nicolas Schweighofer, Denis Mottet, Victor R. Barradas
| BioRxiv
Abstract Following events such as fatigue or stroke, individuals often move their trunks forward during reaching, leveraging a broader muscle group even when only arm movement would suffice. In previous work, we showed the existence of a 'force reserve' - a phenomenon where individuals, when challenged with a heavy weight, adjusted their motor coordination to preserve approximately 40% of their shoulder's force.
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