Levodopa versus non-levodopa brain language fMRI in Parkinson's disease.

Objective: To identify the effect of levodopa in language areas in Parkinson's disease patients.

Methods: We evaluated 50 patients with mild to moderate Parkinson's disease, age and gender paired to 47 healthy volunteers. We selected two homogeneous groups of 18 patients taking levodopa and 7 no levodopa patients.