Apomorphine induced reinforcement (original) (raw)
Abstract
Under a 2 mg per kg intraperitoneal injection of apomorphine, four female Long Evans hooded rats were placed on continuous and fixed ratio reinforcement schedules using a gnawable pine block. Ss would learn to turn their heads away from the gnawable object in order to obtain 15 sec. of gnawing time. The rate of response increased from less than one response in 5 min. to over 3 responses per min. in 10 1½ hr. conditioning sessions. Rates of response stabilized during the last 5 experimental sessions and fixed ratio schedules of up to 5:1 were obtained in five additional 1½ hr. sessions.
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References
- Ernst, A. M. Relation between the action of dopomine and apomorphine. Psychopharmacology, 1965, 7, 391–399.
Article Google Scholar - Weissman, A. Apomorphine elicitation of key pecking in pigeons. Arch. int. Pharmacodyn. They., 1966, 160, 330–334.
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Authors and Affiliations
- Utah State University, Logan, USA
Paul Robinson & Marvin Daley - State University College, Potsdam, N.Y., USA
Peter C. Wolff
Authors
- Paul Robinson
- Marvin Daley
- Peter C. Wolff
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Note
1. This study was based on a Master’s Thesis by the first author. The authors wish to thank Frank Stermitz for many valuable suggestions. Support for the study was obtained from the Utah State Uniform School Fund 235.