My primary areas of interest and research activities have been the study of movement disorder phenomenology, clinical trials in Parkinsons disease (PD), Huntingtons disease and dystonia and study of genetics, environmental exposures and biomarkers in PD. I am site PI for the Parkinsons Progression Markers Initiative (PPMI) supported by the Michael J Fox Foundation. I am currently examining in a longitudinal fashion psychiatric and cognitive outcomes in PD.