How does stimulation of ?, ?, and ? opioid receptors contribute to the development of a conditioned place preference in laboratory animals?
a. ? receptor agonists promote contextual learning, ? receptor agonists produce reward, and ? receptor agonists produce a conditioned place aversion.
b. ? receptor agonists produce a conditioned place aversion, ? receptor agonists promote contextual learning, and ? receptor agonists produce reward.
c. ? receptor agonists produce reward, ? receptor agonists produce a conditioned place aversion, and ? receptor agonists promote contextual learning.
d. ? receptor agonists promote contextual learning, ? receptor agonists produce a conditioned place aversion, and ? receptor agonists produce reward.
e. ? receptor agonists produce reward, ? receptor agonists promote contextual learning, and ? receptor agonists produce a conditioned place aversion.
Answer: E
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