According to the Focus on Neuroscience box "The Addicted Brain," alcohol, heroin, nicotine, cocaine, and amphetamines all affect which system in the brain?
A) the suprachiasmatic nucleus
B) the GABA excitability system
C) the endorphin circuit in the brainstem
D) the dopamine reward system

Question

Quizplus · Accepted Answer

The dopamine reward system is activated by drugs such as alcohol, heroin, nicotine, cocaine, and amphetamines. This system plays a role in feelings of pleasure and reward, leading to addiction when repeatedly activated by drug use.

According to the Focus on Neuroscience Box "The Addicted Brain