Rhythmic Auditory Stimulation on Upper-limb Movements in PD Patients

This study employed a randomized controlled trial design. We randomly assigned PD patients into either the RAS group (experimental) or the noRAS group (control). Both groups underwent a 21-day training program (40 minutes per session, one session daily), with the only difference being the presence or absence of RAS. Assessments were conducted at five time points: baseline (T1), day 8 (T2), day 15 (T3), post-intervention (T4), and one-month follow-up (T5). Behavioral assessments were performed at all time points, while EEG recordings were only conducted at baseline (T1) and post-intervention (T4). All assessments and training sessions were scheduled during participants' medication 'on' state (1-2 hours after medication intake) to ensure consistency and optimal motor function.