Vagus nerve stimulation (VNS). Stimulation of the vagus nerve is a way of regulating the excitability of nerve cells devoid of inducing seizures. The vagus nerve, which commences during the brainstem, has several branches, and vagal nerve stimulation is employed medically to normalize heart level in those with cardiac arrhythmias. https://brainhealthusa.com/psychiatrist-vernon-los-angeles-county/