Scientists say the map of a speck of a mouse's brain could be as transformative as the Human Genome Project. Here's what to know.

Thanks to a mouse watching clips from “The Matrix,” scientists have created the largest functional map of a brain to date.

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. Now, a team of more than 150 researchers has proven him wrong by mapping a tiny portion of a mouse’s brain.

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 that could offer insight into how the human brain works.

Scientists achieved “a milestone” by charting the activity and structure of 200,000 cells in a mouse brain and their 523 million connections.

Thanks to a mouse watching clips from “The Matrix,” scientists have created the largest functional map of a brain to date.