Functional correlates with left-right asymmetry of visual evoked potentials in stroke patients-modeling and experimental results

The correlation between the FIM (Functional Independence Measure) on admission and the left-right scalp potential amplitude was studied in post-stroke patients, using flash Visual Evoked Potential (VEP) stimulation and theoretical model of the head. It was found that left-right asymmetry of the scalp VEP may be useful indices for rehabilitation in patients after brain damage. The modeling study shows that left-right asymmetry of the scalp VEP in patients after brain damage may be a result of changes in the conductivity of the damage region.