Vagus nerve stimulation (VNS). Stimulation of the vagus nerve is a way of regulating the excitability of nerve cells without inducing seizures. The vagus nerve, which starts from the brainstem, has numerous branches, and vagal nerve stimulation is utilised medically to normalize coronary heart rate in people with cardiac arrhythmias. https://brainhealthusa.com/psychiatrist-in-arcadia-los-angeles-county/