Motor Training for Infants With Cerebral Palsy

Inclusion Criteria: * Age at enrollment: between 3-8 months corrected age * Caregivers fluent in English * Preterm infants with objectively defined severe diffuse white matter abnormality on MRI at term OR * High-risk infants (e.g., preterm, neonatal hypoxic-ischemic encephalopathy, perinatal stroke) with moderate-severe injury on structural MRI or cranial ultrasound (e.g., basal ganglia/thalamic signal intensity, cystic periventricular leukomalacia, encephalomalacia, large stroke, and/or severe intraventricular/periventricular hemorrhage) at around term-equivalent age or before Neonatal Intensive Care Unit discharge AND either: * "Absent" fidgety movements based on the Prechtl General Movement Assessment (GMA) between 3-4 months corrected age OR * A score of 56 or below on the Hammersmith Infant Neuromotor Examination (HINE) between 3-6 months corrected age (31) Exclusion Criteria: * Medical conditions that restrict active participation such as oxygen dependence * Infants with significant visual deficits defined by the inability to track an object horizontally * Living in a remote location prohibiting drives to the hospital every other week.