Chantal, an undergraduate student, has been using cocaine recreationally for several months. Recently, she has noticed that she needs to take higher doses of cocaine to experience the same level of euphoria. She wonders if cocaine tolerance might be playing a role in this. According to lecture, what typically happens with cocaine tolerance at the neurobiological level?
a) There is an increase in dopamine release from the synaptic cleft.
b) There is an increase in dopamine receptors on the presynaptic neuron.
c) There are no changes to dopamine receptors.
d) None of these response selections adequately describe cocaine tolerance.