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