Deep brain stimulation acts as a brain pacemaker to control symptoms of Parkinson disease. A wire called a lead is surgically implanted into the brain, and then attached by an extension wire under the skin to a battery inside muscles in the chest. The battery sends pulses of energy to the brain lead, which disrupt the abnormal firing that occurs in certain areas of the brain in Parkinson disease. This allows the brain to function more normally, and improves the symptoms of Parkinson disease.
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