Newer research reveals that stimulating the brain's reward circuits in humans produces more ________than pure enjoyment.

A) desire
B) fatigue
C) agitation
D) pain relief

Reward Circuits

Neural pathways in the brain that regulate the motivation and pleasure response, critical in learning and addiction.

Pure Enjoyment

The experience of pleasure or satisfaction obtained without any ulterior motive or external incentive.

Desire

A strong feeling of wanting to have something or wishing for something to happen.