Inclusion Criteria for Stroke Participants:  First time, unilateral ischemic stroke in middle cerebral artery territory, motor and/or sensory tracts and confirmed by clinical examination (including neuroimaging) 7±6 days post-stroke Upper limb impairment >18 years old Fugl-Meyer upper extremity score between 30 and 57 Vision better than 20/50 (corrected) Able to follow 3-step task commands  Inclusion Criteria for Control Participants:  >18 years old Good health  Exclusion Criteria for Stroke Participants:  History of:  past undiagnosed stroke (evident on neuroimaging), neglect (screened with Behavioral Inattention Test), apraxia, or upper extremity orthopedic or muscular issues Secondary neurologic injury or disease (e.g., Parkinson's) Contraindication to MRI Medical or neuropsychiatric conditions that would interfere with study outcomes, or where participation presents a risk to the subject Enrollment in an interventional trial that supplements standard therapy  Exclusion Criteria for Control Participants:  • Significant upper limb neurologic or orthopedic conditions