Deep Brain Stimulation in Patients With Parkinson's Disease

The Effect of Deep Brain Stimulation on Movement-Related Cortical Potentials in Patients With Parkinson's Disease

The purpose of this study is to determine the effect of deep brain stimulation surgery on movement-related cortical potentials in patients with Parkinson's disease.

Patients who have had deep brain stimulation surgery for Parkinson's disease at Mayo Clinic Arizona will have electroencephalographic (EEG) measurements with the stimulator on followed by EEG measurements with the stimulator off. Patients who are scheduled to have deep brain stimulation surgery for Parkinson's disease will have EEG measurements before and after surgery.

Inclusion Criteria:

• Patients who have had deep brain stimulation surgery for Parkinson's disease at Mayo Clinic Arizona, or who are scheduled to have deep brain stimulation surgery for Parkinson's disease at Mayo Clinic Arizona.

Exclusion Criteria:

• Patients unable to do repetitive dorsiflexion of the wrist due to orthopedic problems.
• Pregnant women.
• Prisoners or institutionalized individuals.