While there are not yet any standardized criteria for selecting candidates for deep brain stimulation (DBS) therapy, Kelvin L. Chou, MD, Co-Director of the STIM (Surgical Therapies Improving Movement) Program at the University of Michigan, and Parag G. Patil, MD, PhD, Professor of Neurology at the University of Michigan Medicine, discuss movement disorders, the deep brain stimulation procedures and testing protocols, and some factors that should be considered before recommending DBS as a treatment.