Familiarity- based stimulus generalization of conditioned suppression in rats is dependent on the perirhinal cortex.

Jasper Robinson, Emma J. Whitt, Rachel Rutter Horsley, Peter M. Jones

Research output: Contribution to journalArticlepeer-review

9 Citations (SciVal)

Abstract

We report that bilateral. excitoxic lesions of the perirhinal cortex attenuate rats' familiarity-based stimulus generalization After surgery. rats were preexposed either to 2 auditory stimuli (A and B) or to only 1 auditory stimulus (B) Following preexposure, all rats received pairings of A and a footshock before assessment of generalized responding (conditioned suppression) to B Sham rats' generalization was greater when preexposure was to both A and 13 than when preexposure was to 13 only That pattern was abolished in lesioned rats, though no general deficiency was found in other measures of auditory processing Our findings suggest that the perirhinal cortex is required for rats to encode familiarity as part of stimulus representations
Original languageEnglish
Pages (from-to)587-599
Number of pages12
JournalBehavioral Neuroscience
Volume124
Issue number5
DOIs
Publication statusPublished - Oct 2010

Keywords

  • Generalisation decrement;
  • Familarity
  • Perirhinal cortex

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