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When we cut the vagus nerve, which runs from the brain stem down to the spleen, the effect was gone," says Tracey, president and CEO of the Feinstein Institute for Medical Research in Manhasset, N.
In 2011, rheumatologist Paul-Peter Tak, of the University of Amsterdam, and his colleagues implanted vagus nerve stimulators into four men and four women who had rheumatoid arthritis, an autoimmune inflammatory condition that causes swollen, tender joints.
that produces implantable vagus nerve stimulators, Tak says.
The vagus nerve stimulator improves seizure control by reducing the frequency and severity of seizures.
The VNS Therapy System consists of an implanted pacemaker-like generator attached to a stimulation lead, which delivers mild intermittent stimulation to the patient's left vagus nerve which sends signals to the brain.
The procedure consists of implanting the generator under the skin (usually in the left chest) and threading the lead up through the neck to the vagus nerve, where electrodes are gently placed on the nerve.
Vagus nerve stimulation (also called VNS or VNS Therapy) is a way of providing electrical stimulation to the brain to treat seizures that do not respond sufficiently well to drug therapy.
VNS Therapy works by delivering intermittent low levels of electrical energy or stimulation to the left vagus nerve, which then sends signals to the brain.