Cognitive Decline Following Deep Brain Stimulation: A DBS-fMRI Study

This study is looking at how deep brain stimulation (DBS) surgery — a procedure that places a small device in the brain to help control movement — may affect memory and thinking in people with Parkinson's disease. Researchers will use brain scans (MRI) before and after the procedure to better understand these changes. **You may be eligible if...** - You are 18 or older - You have been diagnosed with Parkinson's disease and have already been selected by your movement disorder team to undergo DBS surgery in the brain area called the STN - You have completed a neurological and thinking/memory assessment at the study center **You may NOT be eligible if...** - You have uncorrected vision or hearing problems - You are pregnant or plan to become pregnant during the study - You have another neurological condition (such as a prior stroke, epilepsy, or major head injury) besides Parkinson's - You have claustrophobia or cannot lie flat in an MRI scanner - You have severe lung disease requiring oxygen - You have metal implants or devices incompatible with MRI (such as a pacemaker) Talk to your doctor to see if this trial is right for you.