Investigating Central Neurophysiologic Correlates of Non-Motor Symptoms of Parkinson's Disease

"Transcranial magnetic stimulation (or TMS) is a non-invasive form of brain stimulation in which a magnetic pulse is applied directly to the scalp. This device is FDA approved for treatment of depression and other neuropsychiatric disorders, and is regularly used in neurologic and psychiatric research.~iTBS is a particular TMS protocol which delivers the magnetic field in triplet bursts (three stimulations very close together at a frequency of 50 Hz very quickly). The triplet bursts are repeated at a rate of 5 Hz for 2 seconds (30 pulses), followed by 8 seconds rest, repeated 20 times for a total of 600 pulses. Each treatments lasts approximately 3 minutes."