My major research interests include investigation of the impact of exercise on sleep, cognition, motor outcomes, and functional connectivity in patients with Parkinson’s disease. I have also investigated the influence of deep brain stimulation and other therapies on sleep in these patients. My lab also studies the effects of cognitive training (speed of processing training) on pedestrian safety, cognition, and visual processing in patients with Parkinson’s disease and healthy older adults. In addition, I am site investigator for multi-site studies evaluating biomarkers and investigational therapies in patients with Parkinson’s disease and dementia with Lewy bodies.