Naloxone effects on schedule-controlled
โ
Alice M. Young; Travis Thompson
๐
Article
๐
1979
๐
Springer
๐
English
โ 788 KB
The effects of morphine pellet implantation and naloxone administration were examined in rats lever pressing under inter-response time schedules of food presentation. Subcutaneous implantation of a morphine pellet initially decreased lever-pressing rates. Tolerance to this effect developed within 3-