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Behav Neurosci. 1993 Apr;107(2):246-53.

Amygdala central nucleus lesions disrupt increments, but not decrements, in conditioned stimulus processing.

Author information

1
Department of Psychology, Experimental, Duke University, Durham, North Carolina 27706.

Abstract

The effects of neurotoxic lesions of the amygdala central nucleus (CN) on changes in the associability of a conditioned stimulus (CS) in appetitive Pavlovian conditioning were examined in 2 experiments with rats. In Experiment 1, CN lesions had no effect on the reduction in the associability of a CS produced by preexposure to that cue (latent inhibition). In Experiment 2, CN lesions prevented the enhancement of the associability of a CS that is normally observed when an inconsistent predictive relation is arranged between that CS and another cue. The results support previous claims that the amygdala CN is involved in broad-based incremental, but not decremental, changes in the processing of CSs in Pavlovian conditioning.

PMID:
8484890
DOI:
10.1037//0735-7044.107.2.246
[Indexed for MEDLINE]

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