Deep brain stimulation (DBS) is an effective treatment for Parkinson's disease (PD) but its neural mechanisms remain poorly understood. A mechanistic understanding requires precise characterization of functional responses to various stimulation conditions within the same individual. Here we use 3-T magnetic resonance imaging (MRI)-compatible DBS and precision imaging to collect extensive data from 14 patients with PD who received DBS. Across five timepoints spanning 1 year, each patient underwen