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A comparison of responding maintained under second-order schedules of intramuscular cocaine injection or food presentation in squirrel monkeys.
Key pressing by squirrel monkeys was maintained under second-order schedules of either intramuscular cocaine injection or food presentation. Under one schedule, each completion of a 10-response fixed-ratio unit produced a brief visual stimulus; the first fixed-ratio unit completed after 30 minutes e...
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| Autor principal: | |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
1979
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1332982/ https://ncbi.nlm.nih.gov/pubmed/117071 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1901/jeab.1979.32-419 |
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