1. which “reward system” is responsible for creating feelings of pleasure?
limbic system
nervous system
digestive system
circulatory system
2. which neurotransmitter is released when the brain’s “reward system” is activated?
dopamine
serotonin
norepinephrine
epinephrine
3. according to pet scan results, what do cocaine addicts process less efficiently?
glucose
protein
carbohydrates
sucrose