Psychology / Psych 0170 · Atom · ~20 seconds
Antagonists
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An antagonist is a substance that decreases a neurotransmitter's activity, usually by occupying its receptor without activating it.
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A drug that binds dopamine receptors without triggering them prevents dopamine from acting there.
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Antagonist and agonist describe an effect on a system, not a moral status. Both appear in useful medications.