Targeted Motor Learning to Improve Gait for Individuals With Parkinson Disease

Inclusion Criteria: * idiopathic Parkinson's disease (Hoehn and Yahr Stage 2-3) * self-report the ability to walk uninterrupted for 10 minutes both overground and on a treadmill without therapist assistance * comfortable gait speed \> 0.4 m/s and \< 1.2 m/s * normal (or corrected to normal \[i.e., hearing aid\]) hearing * deficits in gait continuity (e.g., shuffling, shortened strides, freezing, festination, bradykinesia, etc) based on observational gait analysis * Movement Disorders Society - Unified Parkinson Disease Rating Scale (MDS-UPDRS-III) item 10 ≥1 and \<3 * be on stable doses of orally-administered levodopa * age 50-80 years old Exclusion Criteria: * contraindications to MRI (e.g., metal implants, claustrophobia, etc) * cognitive deficits (Montreal Cognitive Assessment \[MoCA\] \< 26) * concurrent Physical Therapy * have undergone deep brain stimulation surgery * cannot walk without therapist assistance * uncontrolled cardiorespiratory/metabolic disease, or other neurological disorders or orthopedic injury that may affect gait.