Brain implant gave Parkinson 's patients more tremor-free hours daily than meds . Deep brain stimulation delivers electrical impulses to movement control center . Comment: Treatment , introduced in 1990s , becoming more widely accepted .
Brain implant gave Parkinson 's patients more tremor-free hours daily than meds . Deep brain stimulation delivers electrical impulses to movement control center . Surgery is complicated , carries risks including infection , depression . Treatment , introduced in 1990s , becoming more widely accepted .