A researcher reports that a drug directly stimulates a reward center in the brain rather than acting through indirect stimulation of a reward center. The drug the researcher is studying could be any of the following drugs EXCEPT:
A) powdered cocaine.
B) methamphetamine.
C) marijuana.
D) caffeine.

Question

Quizplus · Accepted Answer

Marijuana primarily acts through the endocannabinoid system and does not directly stimulate the brain's reward centers in the same way that drugs like cocaine and methamphetamine do, which directly increase dopamine levels in those areas.

A Researcher Reports That a Drug Directly Stimulates a Reward