The RECOVER study is a nationwide clinical trial that has been approved by Medicare to provide additional evidence for the benefits of Vagus Nerve Stimulation (VNS) Therapy. Vagus Nerve Stimulation Therapy is an FDA-approved device for treating patients with TRD (Treatment Resistant Depression). It is implanted in the left chest area during a short outpatient procedure. The device delivers mild, intermittently pulsed signals to the vagus nerve in the neck that activate various parts of the brain.