Electrical stimulation of the vagus nerve, the
longest nerve in the body, is proving to be an effective treatment
for epilepsy in .many cases. Two vagus nerves run along each side
of the neck, then down the esophagus to the gastrointestinal tract;
they affect swallowing, speech, and many other bodily functions.
They also appear to connect to parts of the brain that are involved
with seizures. In vagus nerve stimulation, a battery-powered device
similar to a pacemaker is implanted under the skin in the upper
left of the chest and a lead is attached to the left vagus nerve
in the lower part of the neck. The batteries wear out after three
to five years and need to be removed and replaced. |