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Updated: May 25, 2026

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Published on: April 12, 2016
Influence of visual feedback in the regulation of arm stiffness following stroke
Davide Piovesan1, Maura Casadio, Pietro Morasso
1Sensory Motor Performance Program at the Rehabilitation Institute of Chicago, Chicago, IL 60611, USA. d-piovesan@northwestern.edu
Abstract:
Stroke survivors strongly rely on visual feedback to control their movements, since segmental reflexes are characterized by an inherent hyper-excitability. To test the effect of visual feedback on the modulation of arm stability we estimated the stiffness of the paretic arm in nine stroke survivors during robot mediated therapy, where subjects trained with and without vision. While several studies found a negligible effect in unimpaired individuals, our results highlighted a marked reduction of stroke survivors' arm stiffness in absence of visual feedback.
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