Inclusion Criteria:  Age at enrollment: between 3-6 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.