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Psychopharmacology

, Volume 49, Issue 1, pp 69–73 | Cite as

Fear-dependent variations in continuous avoidance behavior of pigs

I. Lack of effect of diazepam on performance of discriminative fear conditioning
  • R. Dantzer
  • P. Mormede
Animal Studies

Abstract

Pigs trained to avoid shocks by crossing a barrier in a shuttle-box according to a continuous avoidance procedure were submitted to a Pavlovian discriminative fear-conditioning procedure in which a tone was always followed by unavoidable shock (CS+) and another tone never followed by shock (CS-). The presentation of the CS+ on a test session in the shuttle-box induced an increase of the response rate while the CS-decreased the performance. Diazepam (1 mg/kg) administered before the test session did not modify the changes in avoidance response to each CS.

Key words

Pig Continuous avoidance behavior Discriminative fear conditioning Diazepam 

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Copyright information

© Springer-Verlag 1976

Authors and Affiliations

  • R. Dantzer
    • 1
  • P. Mormede
    • 1
  1. 1.Station de Pharmacologie-ToxicologieI.N.R.A.ToulouseFrance

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