Researchers have long thought that rewards like food or money encourage learning in the brain by causing the release of the 'feel-good' hormone dopamine, known to reinforce storage of new information.

What goes on in a man’s head during sex? According to a new study from Japan, it all comes down to the precise timing of two brain chemicals: dopamine and acetylcholine. Their findings in male mice ...

Researchers have long thought that rewards like food or money encourage learning in the brain by causing the release of the "feel-good" hormone dopamine, known to reinforce storage of new information.