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Contextual modulation of stimulus generalization in rats.

Close, James Owen, Hahn, Ulrike and Honey, Robert Colin 2009. Contextual modulation of stimulus generalization in rats. Journal of Experimental Psychology: Animal Behavior Processes 35 (4) , pp. 509-515. 10.1037/a0015489

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Abstract

One connectionist analysis of the acquired equivalence/distinctiveness of cues assumes that when similar compounds (e.g., AX and BX) are paired with the same outcome (e.g., food, +; or no food, −), their components come to activate the same configural unit (ABX). When these compounds are paired with different outcomes, their components will come to address different units. Here, rats received appetitive training with eight compounds (e.g., AX+, BX+, CX−, DX−, AY+, BY−, CY−, DY+) that should generate the following configural units: ABX, CDX, ADY, and BCY. In Experiment 1, rats then received aversive conditioning to A, which should activate and revalue representations ABX and ADY. Subsequently, compounds that provided dual activation (i.e., BX and DY) of one of the revalued configural units (ABX and ADY) were shown to elicit greater fear than those compounds that provided a single source of activation to each unit (i.e., DX and BY). Experiment 2 confirmed and extended these findings. These results provide support for the connectionist analysis outlined above and are consistent with the application of this approach to the acquired equivalence/distinctiveness of cues.

Item Type: Article
Status: Published
Schools: Psychology
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Publisher: American Psychological Association
ISSN: 0097-7403
Last Modified: 04 Jun 2017 03:58
URI: http://orca-mwe.cf.ac.uk/id/eprint/30100

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