Many early studies of intracranial self-stimulation focused on the stimulation of the
A) lateral hypothalamus or septum.
B) cortex.
C) amygdala.
D) hippocampus.
E) striatum or substantia nigra.
Question 2
The lack of strong support for early physical-dependence theories of addiction lent indirect support to the notion that the primary factors in drug addiction are
A) withdrawal effects.
B) tolerance effects.
C) conditioned withdrawal effects.
D) conditioned compensatory responses.
E) the drug's positive-incentive properties.