Where do you turn to when anti-depressants don't work? Some patients with severe depression are turning to a device originally developed for epileptics. They say the FDA approved device is helping them get their lives back.

  Lanna Sanderson, 55- year- old, enjoys playing the piano again after years of severe depression kept her from finding happiness even in music.

  Lanna is one of four- million americans suffering from treatment resistant depression or TRD where traditional therapies including anti-depressants don't work.

  Dr. Greg Seal, a Brentwood Psychiatrist, says V.N.S or Vagus Nerve Stimulation therapy is saving lives. V.N.S consists of a pacemaker-like device that's implanted into the chest by a surgeon. It's attached to a wire that stimulates the patient's vagus nerve which then activates areas of the brain. Then, it's controlled by a psychiatrist.

  The device can take several months to help relieve symptoms of depression so medication is also given for awhile. Still patients like lanna sanderson say VNS is music to her ears and has worked wonders in her life.