title: A treatment for Parkinson's disease, but no improvement for dementia.
abstract: High-frequency deep brain stimulation of the subthalamic nucleus has been in use for 15 years. The implants reduce tremor, rigidity and bradykinesia (slowed ability to start and continue movements), so allowing levadopa to be reduced by an average of 60 per cent. However, dementia and cognitive defects are not improved and might even be increased by the trauma of the procedure.
authors.forename: Ruth
authors.initials: R
authors.lastname: Sander