Patients with movement disorders, for example Parkinson's disease (PD), essential tremor (ET) and dystonia, will be assessed using appropriate clinical and (sensor) quantified measures in order to obtain quantitative and qualitative data that is not consistently obtained in clinical exams. This data will aid in assessing trends and outcomes in motor and non-motor signs, side effects and symptoms that correlate with deep brain stimulation (DBS) lead location, stimulation parameters, and other variables, for those that have received this treatment, in order to inform neurosurgical and neurological practices aimed at optimizing treatment and therapy for movement disorders.~For those patients that have received DBS lead implant(s), this study will include the analysis of patient's clinical and/or research-related intraoperative neurophysiological recordings collected during the microelectrode recording portion of the DBS lead implant surgery. Additionally, researchers may analyze trends and outcomes by gathering data from retrospective and prospective chart review
Non-randomized data collection, excepting participants completing the Implanted DBS Structured Data Collection, who will be randomized to one of two conditions.