Patients undergoing awake GPi DBS implantation surgery for the treatment of Parkinson’s disease at the University of Florida Norman Fixel Institute for Neurological Diseases were included in the study. Patients undergoing DBS implantation surgery targeted to the STN for Parkinson’s disease or the ventralis intermedius (VIM) nucleus for the treatment of essential tremor were included for comparison as controls. Informed consent was obtained for all patients for inclusion in our institutional database (Institutional Review Board #201901807). Both hemispheres were tested in a subset of patients who underwent staged bilateral DBS.
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