To make the map, scientists at Baylor College of Medicine in Houston began by using specialized microscopes to record the brain activity in a 1-cubic-millimeter portion of tissue in a lab mouse ...

This map represents a new way to study how they do it. “The brain is this biological tissue inside our heads that makes us see the world, have feelings, make decisions,” said Andreas Tolias, a ...

From a tiny sample of tissue no larger than a grain of sand ... Combined with the recordings of brain activity, the result is the largest wiring diagram and functional map of the brain to date, ...