Neurons—the nerve cells responsible for transmitting electrical and chemical signals throughout the body—are organized in tissue, tending to cluster together in groups according to how they function.

A new study has identified a brain circuit that correlates with how intensely people engage in politics, regardless of their political beliefs.

"You get a sense of how complicated you are. We're looking at one tiny part ... of a mouse's brain and the beauty and complexity that you can see in these actual neurons and the hundreds of ...

“You get a sense of how complicated you are. We’re looking at one tiny part ... of a mouse’s brain and the beauty and complexity that you can see in these actual neurons and the hundreds of millions ...