594-Neural Transformations of the Second Pregnancy

Paper Talk · Mar 5, 2026 · 19m

This research study examines how a second pregnancy uniquely reshapes the human brain compared to a woman's first experience with motherhood. Through multimodal MRI data, scientists discovered that while both pregnancies cause significant reductions in gray matter volume, a second pregnancy specifically targets networks involved in external attention and motor control. In contrast, the first pregnancy primarily adapts the default mode network, which is responsible for introspection and social cognition. These structural shifts were found to correlate with maternal-infant bonding and the risk…