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Cocaine's effects on food-reinforced pecking in pigeons depend on food-deprivation level.
Four pigeons deprived to 80% of their laboratory free-feeding weights pecked keys under a multiple fixed-ratio 30 fixed-interval 5-min schedule of food presentation. Components alternated strictly with 15-s timeouts separating them; each was presented six times. When rates of pecking were stable, 2...
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| Main Authors: | , , |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
1995
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1349837/ https://ncbi.nlm.nih.gov/pubmed/7622982 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1901/jeab.1995.64-61 |
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