Acquired equivalence and distinctiveness of cues: II. Neural manipulations and their implications

Coutureau, Etinne, Killcross, Andrew Simon, Good, Mark Andrew ORCID: https://orcid.org/0000-0002-1824-1203, Marshall, V. J., Ward-Robinson, Jasper and Honey, Robert Colin ORCID: https://orcid.org/0000-0001-6870-1880 2002. Acquired equivalence and distinctiveness of cues: II. Neural manipulations and their implications. Journal of Experimental Psychology: Animal Behavior Processes 28 (4) , pp. 388-396. 10.1037/0097-7403.28.4.388

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Abstract

Neural manipulations were used to examine the mechanisms that underlie the acquired equivalence and distinctiveness of cues in rats. Control rats and those with excitotoxic lesions of either the hippocampus (BPC) or entorhinal cortex (EC) acquired the following conditional discrimination: In Contexts A and B, Stimulus X --3- food and Stimulus Y --* no food, and in Contexts C and D, Y - food and X ---> no food. Rats then received many food pellets in A but not in C. After this treatment, control rats showed more magazine activity in B than in D-an acquired equivalence- distinctiveness effect. This effect was also evident in BPC rats but not in EC rats. These results indicate that changes in stimulus distinctiveness are dissociable from the process of conditional leaming. (PsycINFO Database Record (c) 2010 APA, all rights reserved)

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Psychology
Subjects:	B Philosophy. Psychology. Religion > BF Psychology
Publisher:	American Psychological Association
ISSN:	0097-7403
Last Modified:	17 Oct 2022 09:29
URI:	https://orca.cardiff.ac.uk/id/eprint/3328

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