Identifying the association between laboratory assessment results and developmental outcomes is also critical. The General Movements Assessment (GMA) is a quick and non-invasive way to evaluate motor performance and to predict CP in high-risk infants before 20 weeks of age (corrected age for preterm infants). Thus, the purpose of this study is to use MRI/DTI and TMS to comprehensively examine both the CST integrity and cortical excitability in infants following perinatal stroke, and to identify association with motor outcome as evaluated by GMA.