Serotonin and decision making processes

► 5-HT is integrally important in modulating vigilance and stimulus-bound behaviour ► 5-HT2A and 5-HT2C receptors exert opposing effects on impulsivity ► 5-HT2C receptors modulate compulsivity, possibly via reward-related processes ► 5-HT6 antagonist have beneficial effects on decision making.