Brain volume changes in Parkinson's disease and their relationship with cognitive and behavioural abnormalities.

Cognitive and behavioral abnormalities are frequent in Parkinson's disease (PD) but their anatomical correlates are still uncertain. We assessed a cohort of 59 PD patients with and without impulse control disorders (PD-ICDs and PD-CNTR) with magnetic resonance imaging and a comprehensive neuropsychological battery. Thirty-five PD patients presented ICDs according to DSM-IV criteria and Minnesota Impulsive Disorders Interview.