STN-tTIS Modulates Parkinson Motor Symptoms With and Without Medications

The goal of this clinical trial is to evaluate the immediate effects of individualized 130 Hz STN-tTIS(Subthalamic Nucleus - transcranial Temporal Interference Stimulation)on motor symptoms in early-to-mid-stage PD patients during both medication "on" and "off" states. The main questions it aims to answer are: 1. Does the therapeutic effect of STN - tTIS relate to medication? 2. The degree of improvement in motor symptoms of Parkinson's disease patients after STN - tTIS therapy under different medication conditions. Researchers compared the MDS - UPDRS - III improvement scores of tTIS therapy in the "on" and "off" medication phases to see if tTIS could work of independently medication. 1. Visit the clinic once every 1 weeks for therapy and test. 2. Record their symptoms and scores.