(I'm seeing lots of articles recently about brain implants.  A couple 
are below.  I didn't read them.  Sylvia)

for mood

http://www.healthcanal.com/mental-health-behavior/25113-Dartmouth-Hitchcock-psychiatrist--authors-report-novel-treatment-for-depression-bipolar-disorder.html

for depression

http://www.dailymail.co.uk/health/article-2081617/Depression-Brain-pacemaker-finally-relief-long-suffering-depressives.html

for bipolar disorder:

http://yourlife.usatoday.com/health/story/2012-01-07/Study-looks-at-deep-brain-stimulation-in-bipolar-patients/52442700/1

(When Linda Andre explored ECT, she found that the interests orf the 
equipment manufacturer drove much of the research, FDA 
classifications, ...  I'm wondering who makes this stimulation 
equipment?  Sylvia)

www.peoplewho.org