While first used for treatment of Parkinson's, neuropsychiatrists and researchers at the University of Toronto and the Toronto Western Hospital are now studying the use and efficacy of DBS for patients with refractory depression, anorexia nervosa, and Alzheimer's.
Find out more about DBS here:
http://news.nationalpost.com/health/brain-surgery-for-severe-depression-may-be-treatment-breakthrough-say-canadian-researchers-and-other-experts