A new study reveals that serotonin neurons in the brain may play a crucial role in helping us estimate the value of future ...

Serotonin is often painted as the brain's "pleasure chemical" but its precise role in the nervous system is ambiguous and perplexing: It's implicated in everything from mood and movement ...

New research reveals that serotonin plays a key role in how the brain predicts future rewards, shedding light on its puzzling activity in response to both pleasure and pain.