Brain implant gave Parkinson 's patients more tremor-free hours daily than meds . The fact that the study included a relatively high number of people over 70 may have contributed to the high rate of adverse events , Weaver explains . 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 . Comment: Treatment , introduced in 1990s , becoming more widely accepted .