Parkinson's disease (PD) affects movement and is often treated with deep brain stimulation (DBS). DBS is a surgery where small devices are placed in the brain to help control movement. This study is looking at where these devices are placed to see how it affects movement problems in people with PD. By understanding this, doctors can better tailor treatments for each person.

For this study, you must have had surgery to place a DBS device in a part of the brain called the globus pallidus (GP) or subthalamic nucleus (STN). You also need to have brain images taken with a special machine called a 7T MRI. People with other movement problems, brain disorders, or memory issues cannot participate.

• The study helps improve future treatments for PD.
• Participants must have specific brain images and previous DBS surgery.
• People with other major health issues are not eligible.