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Second-order schedules of intravenous drug self-administration in rhesus monkeys

✍ Scribed by J.R. Sanchez-Ramos; Charles R. Schuster

Book ID
113217374
Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
747 KB
Volume
7
Category
Article
ISSN
0091-3057

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Under second-order schedules of morphine injection, high rates of responding by squirrel and rhesus monkeys were maintained when morphine was injected intravenously only at the end of each session. Every 30th key-pressing response during a 60-min interval produced a 2-s light; the first 30-response