Evolution of Cortical Asymmetry with Post-stroke Rehabilitation: A Pilot Study

Abstract

The lesions induced by unilateral strokes perturb the complex and critical interhemispheric balance. While a high asymmetry measured in the acute phase is known to be a predictor for poor motor recovery, the evolution of this imbalance along motor recovery has not been studied. Here, we evaluated the evolution of the cortical power asymmetry during a robot-assisted motor task along a rehabilitation intervention. Preliminary results suggest that a reduction of the brain asymmetry towards values exhibited by healthy controls is associated with higher motor recovery.