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Fear-dependent variations in continuous avoidance behavior of pigs

I. Lack of effect of diazepam on performance of discriminative fear conditioning

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.

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References

  1. Anisman, H.: Time-dependent variations in aversively motivated behaviors: nonassociative effects of cholinergic and catecholaminergic activity. Psychol. Rev. 82, 359–385 (1975)

  2. Chisholm, D. C., Moore, J. W.: Effects of chlordiazepoxide on discriminative fear conditioning and shuttle avoidance performance in the rabbit. Psychopharmacologia (Berl.) 18, 162–171 (1970)

  3. Dantzer, R.: Effect of diazepam on performance of pigs in a progressive ratio schedule. Physiol. Behav. (in press)

  4. Dantzer, R., Roca, M.: Tranquilizing effect of diazepam in pigs subjected to a punishment procedure. Psychopharmacologia (Berl.) 40, 235–240 (1974)

  5. Grossen, N. E., Bolles, R. C.: Effects of a classical conditioned ‘fear signal’ and ‘safety signal’ on non discriminated avoidance behavior. Psychon. Sci. 11, 321–322 (1968)

  6. Hoffman, H. S., Fleshler, M.: Stimulus factors in aversive controls: the generalization of conditioned suppression following discrimination training. J. exp. Anal. Behav. 7, 233–239 (1964)

  7. Houser, V. P., Houser, F. L.: The effect of agents that modify muscarinic tone upon behaviour controlled by an avoidance schedule that employs signalled unavoidable shock. Psychopharmacologia (Berl.) 32, 133–150

  8. Houser, V. P., Rothfeld, B., Varady, A., Jr.: Effects of chlordiazepoxide upon fear-motivated behavior in dogs. Psychol. Rep. 36, 987–998 (1975)

  9. Maier, S. F., Seligman, M. E. P., Solomon, R. L.: Pavlovian fear conditioning and learned helplessness: effects on escape and avoidance behavior of (a) the CS-US contingency and (b) the independence of the US and voluntary responding. In: Punishment and aversive behavior. B. A. Campbell and R. M. Church, eds., pp. 352 New York: Appleton-Century-Crofts 1969

  10. Margules, D. L., Stein, L.: Neuroleptics vs. tranquilizers: evidence from animal behavior studies of mode and site of action. Excerpta Medica, Int. Congr. Ser. 129, 108–120 (1967)

  11. Miller, N. E., Weiss, J. M.: Effects of the somatic or visceral responses to punishment. In: Punishment and aversive behavior, B. A. Campbell and R. M. Church, eds., pp. 352. New York: Appleton-Century-Crofts 1969

  12. Noble, M., Adams, C. K.: Conditioning in pigs as a function of the interval between CS and US. J. comp. physiol. Psychol. 56, 215–219 (1963)

  13. Rescorla, L. A., LoLordo, V. M.: Inhibition of avoidance behavior. J. comp. physiol. Psychol. 59, 406–412 (1965)

  14. Seligman, M. E. P., Maier, S. F.: Failure to escape traumatic shock. J. exp. Psychol. 74, 1–9 (1967)

  15. Wise, R. A., Dawson, V.: Diazepam-induced eating and lever pressing for food in sated rats. J. comp. physiol. Psychol. 86, 930–941 (1974)

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Correspondence to R. Dantzer.

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Dantzer, R., Mormede, P. Fear-dependent variations in continuous avoidance behavior of pigs. Psychopharmacology 49, 69–73 (1976). https://doi.org/10.1007/BF00427473

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Key words

  • Pig
  • Continuous avoidance behavior
  • Discriminative fear conditioning
  • Diazepam