Addictive drugs do all of the following EXCEPT
A) cause the neurotransmitter acetylcholine to be released, resulting in intensified feelings of fear and paranoia.
B) activate brain-reward pathways creating a compulsion to repeat the drug experience.
C) stimulate a brain region called the nucleus accumbens to release dopamine.
D) physically change the brain's reward circuitry, making it harder for the addict to overcome his or her addiction.

Question

Quizplus · Accepted Answer

Most addictive drugs cause the release of dopamine in the brain's reward pathways, not acetylcholine. Dopamine release is associated with pleasure and reward, whereas acetylcholine is involved in a variety of functions including muscle activation, arousal, and attention, not specifically fear and paranoia.

Addictive Drugs Do All of the Following EXCEPT