Researchers at the University of Michigan have discovered that the constant gnawing of rodents isn't just a reflex or a consequence of a tough diet. It also triggers a release of dopamine in the brain ...

Researchers discover a neural circuit that rewards gnawing behavior with dopamine, explaining repetitive oral habits in animals and humans.

Researchers found that neurons involved in parental care also activate during comforting behavior in mice. The circuit links caregiving with the brain’s reward system, suggesting prosocial actions may ...