Neuroscientists have produced the largest wiring diagram and functional map of a mammalian brain to date using tissue from a part of a mouse's cerebral cortex involved in vision, an achievement ...

In 1979, biologist Francis Crick claimed it would be impossible to create an accurate diagram of the brain’s wiring and neuronal activity—even within just a cubic millimeter of brain tissue.

In a landmark achievement, the diagram also details the activity of individual neurons on a large scale ― a neuroscience first. The high-resolution 3D map contains more than 200,000 brain cells ...