A bundle of nerve cell bodies in the posterior region of various vertebrae along the spinal column, the dorsal root ganglion sends signals from the peripheral nervous system to the central nervous system, which includes the spinal cord and the brain.
Mounting evidence over the years has supported the hypothesis that nerves are capable of carrying two signals at once. With DRG spinal stimulation, a neural message of pain on its way to the brain is overtaken and canceled out by a competing message, a mild electric current from a neurostimulator implanted in the patient’s dorsal root ganglion.*
Similar to a pacemaker, a neurostimulator is quite small and unobtrusive and is placed just under the skin. Leads, insulated wires, are connected to the stimulation device as well as electrodes specially designed for use on this type of nerve bundle.