Vagus nerve stimulation (VNS). Stimulation from the vagus nerve is a means of regulating the excitability of nerve cells devoid of inducing seizures. The vagus nerve, which starts inside the brainstem, has many branches, and vagal nerve stimulation is utilized medically to normalize heart price in those with cardiac arrhythmias. https://brainhealthusa.com/psychiatrist-in-san-marino-los-angeles-county/