Vagus nerve stimulation is designed to prevent seizures by sending regular, mild pulses of electrical energy to the brain via the vagus nerve. These pulses are supplied by a device something like a pacemaker. The device is sometimes referred to as a "pacemaker for the brain."It is placed under the skin on the chest wall and a wire runs from it to the vagus nerve in the neck. The vagus nerve is part of the autonomic nervous system, which controls functions of the body that are not under voluntary control, such as the heart rate.
The vagus nerve passes through the neck as it travels between the chest and abdomen and the lower part of the brain. The neurologist (or licensed professional) programs the strength and timing of the impulses according to each patient's needs. The settings can be programmed and changed by placing a wand over the generator on the left side of the chest. The wand…