DBS of the Lateral Habenula in Treatment-Resistant Depression

DBS system consists of the Activa RC 37612 System (Implantable Pulse Generator with Model 37085 Extensions (40 to 95cm), Activa Patient Programmer, and Medtronic Model 3389 DBS Lead). This system is commercially approved for the treatment of chronic, intractable Parkinson's Disease. It will be used with the Model SP-10344 Memory Mod Software which enables the physician to program the Implantable Pulse Generator to a higher frequency.

For responders only: double blind discontinuation will be attempted on either the 12 or 13 month visit. Stimulation intensity will be decreased by 50% and then completely discontinued two weeks later. Subjects will be seen biweekly until 15 months post activation or escape criteria are met. These escape criteria include relapse at 2 visits, hospitalization, active suicidal ideation, or withdrawing consent. If any of these criteria are met, the blind will be broken and open treatment will be resumed.