Latent inhibition in preweanling rats

Philipp J. Kraemer, Christopher K. Randall

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


Two experiments describe a latent inhibition effect in preweanling rats. Subjects were trained with a light-tone compound conditioned stimulus (CS) paired with a footshock unconditioned stimulus. Experiment 1 tested 17- and 21-day-old rats and Experiment 2 tested 18-day-old rats. In each experiment, rat pups given nonreinforced preexposure to the CS expressed less conditioned fear, as indexed by a suppression in general activity during the CS, than did same-age control rats given no preexposure. The results are discussed in terms of behavioral development and the role of the functional maturity of the hippocampus in latent inhibition.

Original languageEnglish
Pages (from-to)81-84
Number of pages4
Issue number1
StatePublished - Mar 1992

ASJC Scopus subject areas

  • General Neuroscience
  • Physiology


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