The RECOVER study will investigate the use of Vagus Nerve Stimulation (VNS) Therapy in up to 1,000 people across the United States. To join the RECOVER study you must be 18 years or older and: currently depressed, have bi-polar depression that has lasted for at least two years or recurred several times, and have tried at least four types of antidepressant treatments and not found them helpful. Please leave a voice message at (205) 975-0068 or email This email address is being protected from spambots. You need JavaScript enabled to view it. for more information.