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 – a diagram of

In a massive scientific effort funded by the National Institutes of Health (NIH), hundreds of researchers have helped to map the connections between hundreds of thousands of neurons in the mouse brain and then overlayed their firing patterns in response to visual stimuli.