Drugs of Abuse Activate the Reward Pathway in the Brain

Multiple Choice

Drugs of abuse activate the reward pathway in the brain.This pathway consists of multiple brain structures,many neurotransmitters,and millions of interconnected neurons.Determining the brain changes that underlie the transition from casual drug use to addiction is a difficult process due to the _____ of the system.

A) reliability
B) parsimony
C) complexity
D) reactivity