The primary infant measures proposed will be brain functional (EEG coherence, neurobehavioral functioning) and brain structural assessments (MRI). The goal will be to examine the direct causal connections and correlations among population characteristics, the intervention, and ultimate outcome at 2w CA. The project is expected to deliver comprehensive and substantive results in favor of the developmental NICU intervention for FGR preterm infants as well as for the earlier studied AGA population. The proposed study is expected to demonstrate intervention effectiveness in improving FGR preterm infants' neurodevelopment. It is anticipated that the intervention-based improvement in brain structure and function will set the stage for improvement in later performance, especially in terms of behavioral/emotional adaptation, learning and school achievement, which are all critical for life success.