Vagus nerve stimulation (VNS). Stimulation in the vagus nerve is a means of regulating the excitability of nerve cells without having inducing seizures. The vagus nerve, which begins inside the brainstem, has several branches, and vagal nerve stimulation is utilized medically to normalize heart fee in individuals with cardiac arrhythmias. https://brainhealthusa.com/psychiatrist-vernon-los-angeles-county/