| Literature DB >> 4981723 |
S R Goldberg, J H Woods, C R Schuster.
Abstract
Operant responding in three monkeys was maintained by intravenous presentations of morphine. Nalorphine produced reliable increases in morphine-reinforced responding. With successive daily nalorphine injections there was a decreased latency of self-administration responding for morphine, and substituted saline injections produced conditioned increases in morphine-reinforced responding.Entities:
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Year: 1969 PMID: 4981723 DOI: 10.1126/science.166.3910.1306
Source DB: PubMed Journal: Science ISSN: 0036-8075 Impact factor: 47.728