Self-administration of codeine plus acetylsalicylic acid in rhesus monkeys with unlimited access to the drugs

A comparison of the stimulus effects of

A comparison of the stimulus effects of codeine in rhesus monkeys under the contingencies of a two lever discrimination task and a cross self-administration paradigm: tests of generalization to pentazocine, buprenorphine, tilidine, and different doses of codeine

✍ F. Hoffmeister 📂 Article 📅 1988 🏛 Springer 🌐 English ⚖ 583 KB

The stimulus effects of codeine were assessed in three monkeys trained to perform first under the contingencies of a cross self-administration paradigm and then under a two lever discrimination task. Codeine-trained monkeys generalized to pentazocine, buprenorphine, and codeine under both procedures