(abbr.) Vagus Nerve Stimulation - a device similar to a pacemaker, shown useful at reducing depression.
Vagus Nerve Stimulation. Vagus nerve stimulation involves the implantation of a generator that stimulates the vagus nerve and thus reduces seizure activity.
Vagus nerve stimulator. A pacemaker-like device, implanted in the upper chest, which stimulates a nerve in the left neck and can reduce seizure activity.