Attenuation of latent inhibition after compound pre-exposure: associative and perceptual explanations.
Three experiments used rats as subjects and the conditioned emotional response (CER) paradigm to examine the effect of pre-exposure to a compound stimulus on the extent of latent inhibition to an element of that compound. In Experiment 1a a group of rats exposed to a compound that comprised a tone and a click exhibited less latent inhibition to the tone than did a group that had received pre-exposure to the tone in isolation. Experiment 1b showed that pre-exposure to the tone/click compound also resulted in an attenuation of latent inhibition to the click relative to a group that was pre-exposed to the click in isolation. Experiment 2 demonstrated that latent inhibition to the tone was left intact following pre-exposure to the tone in compound with a light. This pattern of results seems to be most plausibly explained in terms of the presence and absence of generalization decrement following compound pre-exposure.
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D000818:Animals; D001143:Arousal; D001245:Association Learning; D001288:Attention; D001307:Auditory Perception; D001362:Avoidance Learning; D003214:Conditioning, Classical; D003463:Cues; D007266:Inhibition, Psychological; D007858:Learning; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains