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Effects of caffeine, theophylline and theobromine on scheduled controlled responding in rats.
1 Rats were trained to respond under a variable interval 30 s (VI 30) schedule of food reinforcement. Caffeine (0.32-32 mg/kg), theophylline (1.0-56 mg/kg) and theobromine (10-320 mg/kg) in general produced dose-related decreases in operant responding. At relatively low doses, caffeine (1.0 mg/kg) a...
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| Materialtyp: | Artigo |
| Språk: | Inglês |
| Publicerad: |
Nature Publishing Group
1982
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| Länkar: | https://ncbi.nlm.nih.gov/pmc/articles/PMC2071561/ https://ncbi.nlm.nih.gov/pubmed/7066599 |
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