Dr. Miller was lecturing on dopamine as the key neurotransmitter of reward and addiction; her main points were that rats will not press a lever for amphetamines or cocaine if given a drug that ______ dopamine activity, and the same drug will block the rewarding effects of ESB.

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Quizplus · Accepted Answer

The correct answer is C) antagonizes. Antagonizing dopamine activity means blocking or inhibiting the effects of dopamine. This is consistent with the context given, where a drug that inhibits dopamine activity would prevent rats from pressing a lever for amphetamines or cocaine (both of which increase dopamine activity) and block the rewarding effects of Electrical Stimulation of the Brain (ESB), which is also known to release dopamine.

Dr Miller Was Lecturing on Dopamine as the Key Neurotransmitter