Vagus Nerve Stimulation and Anxiety

In 1997, Vagus Nerve Stimulation (VNS) therapy (Cyberonics, Houston, Texas) was approved by the United States Food and Drug Administration for the treatment of epilepsy refractory to antiepileptic medications. In 2005, VNS received FDA approval for treatment-resistant depression refractory to antidepressants, and Cyberonics recently received FDA approval for the clinical study of VNS for rapid cycling bipolar depression. Many researchers continue to investigate the anxiolytic effects of VNS in h