http://www.kqed.org/.stream/anon/radio/quest/2009/07/2009-07-20-quest.mp3
One in six Americans will experience a major episode of depression at some point in their lives. And yet the drugs commonly used to treat the disease have been described as "blunt instruments"
by researchers in the field. One newer, FDA-approved approach uses magnets held against the patient's forehead to stimulate some of the neurological signals that underlie depression.