Better Brains for Babies

The Science of Early Brain Development
Recent advances in medical science have revealed that much of the brain’s development actually takes place after birth. When a child is born, the cells (or neurons) that make up the brain are in place, but most of the connections that allow those neurons to communicate with each other have not been made. Most of the pathways, or connections, are developed and refined to form the brain’s wiring during the early years of life. Children who have positive, enriching experiences during early childhood can more readily develop the wiring they will need for language, problem solving, forming relationships, and many other abilities that are fundamental in later life.
http://www.fcs.uga.edu/ext/bbb/