Adaptive vs. Continuous Subthalamic Nucleus Deep Brain Stimulation in Parkinson's Disease

This study is comparing two types of deep brain stimulation (DBS) — a technique where a device implanted in the brain sends electrical signals to control movement — to see if an "adaptive" approach that adjusts in real time works better than continuous stimulation for Parkinson's disease. **You may be eligible if...** - You are over 18 years old - You have been diagnosed with idiopathic Parkinson's disease - You already have a specific Medtronic Percept DBS device implanted targeting the subthalamic nucleus (STN) on both sides - Your device shows a reliable brain signal pattern (beta peak) that can guide the adaptive stimulation - You understand Dutch and can follow the study protocol **You may NOT be eligible if...** - You are legally incapacitated - You are enrolled in another clinical trial involving neurological interventions - You have mild cognitive impairment or dementia - You are pregnant - You cannot tell the difference between your ON and OFF motor states Talk to your doctor to see if this trial is right for you.