No abstract available
MeSH terms
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Animals
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Brain / drug effects
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Brain / physiology
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Brain / physiopathology
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Cocaine / pharmacology
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Humans
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Nicotine / pharmacology
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Phencyclidine / pharmacology
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Reward*
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Self Stimulation*
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Substance-Related Disorders / physiopathology*
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Substance-Related Disorders / psychology
Substances
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Nicotine
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Cocaine
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Phencyclidine