Vagus Nerve Stimulation
Overview Vagus nerve stimulation (VNS) is a minimally invasive procedure in which a small battery is implanted in the chest. This sends electrical pulses to the vagal nerve in the neck. The goal is to block the faulty brain messages that cause seizures caused by epilepsy. Research shows that about 30 percent of people treated with VNS experience a major improvement in seizure control. Another 30 percent experience some improvement. Most patients who undergo VNS must continue on epilepsy drugs.