Use of a conflict procedure in pigeons to characterize anxiolytic drug activity: Evaluation of N-methyl-d-aspartate antagonists

Wouter Koek, Francis C. Colpaert

Research output: Contribution to journalArticle

22 Scopus citations


Because of its apparent effectiveness in detecting non-benzodiazepine anxiolytic agents, a recently introduced conflict procedure in pigeons was used to evaluate possible anti-punishment activity of various N-methyl-d-aspartate (NMDA) antagonists. Punished responding was significantly increased by competitive NMDA antagonists (CPP, CGS 19755), but not by noncompetitive NMDA antagonists acting at either the ion channel (PCP, ketamine, MK-801), the glycine site (kynurenic acid, 7-chlorokynurenic acid, ACPC), or the polyamine site (ifenprodil) of the NMDA receptor complex; the proposed glutamate antagonist, riluzole, was also ineffective.

Original languageEnglish (US)
Pages (from-to)PL37-PL42
JournalLife Sciences
Issue number9
StatePublished - 1991
Externally publishedYes


ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Pharmacology, Toxicology and Pharmaceutics(all)

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