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Discrimination of methadone and cocaine by pigeons without explicit discrimination training.
Pigeons were trained to peck a key on a variable-interval 2-min schedule of food reinforcement. Prior to each session, either 2.0 mg/kg methadone (n = 3), 3.0 mg/kg cocaine (n = 4), or 5.6 mg/kg cocaine (n = 2) was administered. When each pigeon's rate of pecking was stable, a range of doses of...
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| Main Authors: | , , , |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
1996
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1284564/ https://ncbi.nlm.nih.gov/pubmed/8843690 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1901/jeab.1996.66-193 |
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