PMID: 2498947Jan 1, 1989Paper

Discriminable effects of phencyclidine analogs evaluated by multiple drug (PCP versus OTHER) discrimination training

Psychopharmacology
D A OvertonL P Gazdick

Abstract

This study tested structural analogs of phencyclidine (PCP) using drug discrimination procedures to determine which analogs produced discriminable effects similar to those of PCP. It also tested the utility of multiple-drug discrimination training (PCP versus other drugs or saline) as a method for increasing the specificity produced by training. All discrimination training took place in two-lever operant compartments using FR-10 reinforcement of presses on the correct lever. During training, rats were required to concurrently discriminate PCP from one or more other drug conditions. Rats in group 1 discriminated PCP (lever 1) versus saline (lever 2). Rats in group 2 discriminated PCP (lever 1) versus saline, fentanyl, phenobarbital, amphetamine, or mescaline (lever 2). In both groups 1 and 2, the required discriminations were rapidly learned. The percentage of PCP choices and the ED50 doses obtained during tests for generalization did not differ significantly in groups 1 and 2. Drugs to which responding on the PCP lever generalized included 1-[1-(2-thienyl)cyclohexyl]piperidine, N-ethyl-1-phenylcyclohexylamine, 1-phenylcyclohexylamine, ketamine, 1-(1-phenylcyclohexyl)morpholine, 1-[1-(2-thienyl)cyclohexyl]morpholine, N,N-diethyl...Continue Reading

References

Feb 27, 1984·Brain Research·S R ZukinR L Balster
Jan 1, 1983·Psychopharmacology·J M White, S G Holtzman

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