Serotonin Signals the Brain’s Best Guess About Future Rewards

Summary: A new study reveals that serotonin neurons in the brain may play a crucial role in helping us estimate the value of future rewards. Rather than simply responding to…

Mental Fatigue Increases Temptation for Rewards

Summary: New research reveals that mental fatigue makes rewards like unhealthy snacks more tempting. Both rats and humans who exerted cognitive effort sought out more rewards, with rats self-administering more…