Inclusion Criteria:  Idiopathic Parkinson's Disease Able to follow instructions to perform the tasks The Montreal Cognitive Assessment, MoCA ≥ 20 Be able to walk independently with or without devices for at least 10 meters  Exclusion Criteria:  Has deep brain stimulation or pacemaker implanted in their body A self-history of seizure A family-history of epilepsy Pregnancy Uncontrolled medical conditions Unstable cardiovascular diseases Has other neurological or psychological disorders in addition to Parkinson's Disease