rTMS Over the Dorsolateral Prefrontal Cortex for the Treatment of Impulse Control Disorders in Parkinson's Disease

Inclusion Criteria: * Clinician-confirmed diagnosis of PD * Ability to provide informed consent, written and verbal * Clinician-diagnosed impulse control disorder or impulse control behaviors including punding/hobbyism and dopamine dysregulation syndrome * A Beck Depression Inventory (BDI) (Beck et al., 1961) score of 14 or lower * A Montreal Cognitive Assessment (MoCA) (Nasreddine et al., 2005) score of 20 or higher * On dopamine-replacement therapy Exclusion Criteria: * History of seizures or epilepsy * History of brain lesions (such as multiple sclerosis, tumor) reported * History of vascular issues in the brain, such as stroke * History of a moderate to severe traumatic brain injury * Meeting the criteria for a major psychiatric illness such as schizophrenia or depression (BDI score of 14 or higher). * Having significant cognitive impairment (assessed by MoCA, cutoff score of 20) (Nasreddine, et al., 2005) * Having had TMS done in the recent past (within a year) * Pregnancy assessed in female patients * Intracranial metallic objects (except for dental fillings) * Current use of substances or medications known to significantly reduce seizure threshold.