BRAIN - Scientists discover a protein in nerves that determines which brain connections stay and which go

(Medical Xpress)—A newborn baby, for all its cooing cuddliness, is a data acquisition machine, absorbing information to finish honing the job of brain wiring that started before birth. This is true nowhere more so than the eyes, which start life peering at a blurry world and within months can make out a crisp, three-dimensional image of a mobile dangling overhead ...

http://medicalxpress.com/news/2014-03-scientists-protein-nerves-brain.