The impact of asymmetric dopaminergic regulation on attention and visual hallucinations in Parkinson's disease

Parkinson's disease typically manifests itself as an asymmetric disease caused by asymmetric dopaminergic depletion in the substantia nigra. We will examine the role of dopaminergic regulation in attention and visual hallucinations by comparing patients with predominantly left-sided versus right-sided motor symptoms. The relation with anatomical (MRI) and metabolic (DAT-Spect) brain correlates will be examined.