There is a gap in the literature on longitudinal changes in neurobiological functioning across pregnancy, particularly with regard to brain function and emotional reactivity. The goal of this study, in collaboration with Dr. Autumn Kujawa's lab, is to assess neural (EEG/ERP), physiological (HRV), and behavioral responses to rewarding and emotionally salient stimuli across pregnancy. Understanding trajectories of change in these processes across the peripartum period has the potential to improve prediction of postpartum depression risk.