Surprise rewards may boost movement speed, hinting that dopamine signals in the brain help control motivation and physical vigor.

Using computational models, the researchers studied how the brain's reward-learning system functions in those with depression, especially among individuals experiencing anhedonia, the inability to ...

If you've heard of two of the brain's chemical neurotransmitters, it's probably dopamine and serotonin. Never mind that glutamate and GABA do most of the work - it's the thrill of dopamine as the ...

A treat here and a treat there seems harmless enough. After all, what could go wrong with a little positive reinforcement for good behavior? As it turns out, quite a bit. The research on reward ...