Abstract
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 language | English |
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Pages (from-to) | 81-84 |
Number of pages | 4 |
Journal | Psychobiology |
Volume | 20 |
Issue number | 1 |
DOIs | |
State | Published - Mar 1992 |
ASJC Scopus subject areas
- General Neuroscience
- Physiology