A growing body of mouse and rat research is rewriting the textbook on how dopamine, the brain’s primary reward signal, actually works. The emerging picture centers on acetylcholine, a second chemical ...

Acetylcholine, a key neurotransmitter, plays a vital role in your body by facilitating communication between neurons in both the central and peripheral nervous systems. It is essential for muscle ...

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 ...