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