WASHINGTON -- Call them brain pacemakers, tiny implants that hold promise for fighting tough psychiatric diseases -- if scientists can figure out just where in all that gray matter to put them.Deep brain stimulation, or DBS, has proved a powerful way to block the tremors of Parkinson's disease. Blocking mental illness isn't nearly as easy a task.
But a push is on to expand research into how well these brain stimulators tackle the most severe cases of depression, obsessive-compulsive disorder and Tourette's syndrome -- to know best how to use them before too many doctors and patients clamor to try.
"It's not a light switch," cautions Dr. Michael Okun of the University of Florida.
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