3.
Several neurobiological substrates have been identified to explain the acute reinforcing effects of abused drugs. These models include both specific neurotransmitters and anatomical foci. Which drug of abuse is associated with the neurotransmitters dopamine, -aminobutyric acid (GABA), and opioid peptides and the anatomic loci of the nucleus accumbens, ventral tegmental area, and amygdala?