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Reinforcing Effects of d-Amphetamine: Influence of Novel Ratios on a Progressive-Ratio Schedule
Progressive-ratio schedules are useful for studying reinforcing effects of drugs. Previous human laboratory studies showed that d-amphetamine significantly increased break points relative to placebo levels. However, the magnitude of the increase was modest, which may be attributable to rather high l...
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| Main Authors: | , , , , |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
2010
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC3815487/ https://ncbi.nlm.nih.gov/pubmed/20944503 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1097/FBP.0b013e32833fa7b3 |
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