Deep Brain Stimulation Neural Recordings of Varied Stimulation During Sleep in Parkinson's Disease

This study is exploring how different deep brain stimulation (DBS) settings affect brain activity and sleep in people with Parkinson's disease who already have a DBS device implanted. Researchers will record brain signals overnight to understand how stimulation patterns relate to sleep quality. **You may be eligible if...** - You are 18 years or older with a diagnosis of Parkinson's disease - You have a Medtronic Percept PC DBS device implanted in both sides of the brain (targeting the subthalamic nucleus) - Your DBS settings have been stable for at least 3 months - You report sleep disturbances related to Parkinson's (score of 1+ on a standard rating scale) - You can walk independently - If taking sleep medications, the dose has been stable for at least 30 days **You may NOT be eligible if...** - You have another neurological condition (such as stroke or multiple sclerosis) - You have untreated moderate-to-severe sleep apnea or other active sleep disorder - You have dementia - You have a history of significant alcohol or substance use Talk to your doctor to see if this trial is right for you.