Variable interval responding maintained by intravenous codeine and ethanol injections in the rhesus monkey

@article{Aksenov1976VariableIR,
  title={Variable interval responding maintained by intravenous codeine and ethanol injections in the rhesus monkey},
  author={Michael Y. Aksenov and Mark E. Llewellyn and James Haughton Woods},
  journal={Pharmacology Biochemistry and Behavior},
  year={1976},
  volume={5},
  pages={577-582}
}
Rhesus monkeys were trained to respond under a variable interval 2 min schedule for codeine or ethanol injections. Both codeine and ethanol were effective in the initiation of variable-interval responding; responding was maintained over a range of codeine (0.003-1.0 mg/kg/injection) and ethanol doses (32.0-560 mg/kg/injection). Maximum rates of responding were obtained at the 0.01 mg/kg/injection codeine dose (0.14 responses/sec) and at the 180 mg/kg/injection codeine dose (0.19 responses/sec… CONTINUE READING
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