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    Contextual modulation of stimulus generalization in rats

    Close, J. and Hahn, Ulrike and Honey, R.C. (2009) Contextual modulation of stimulus generalization in rats. Journal of Experimental Psychology: Animal Behavior Processes 35 (4), pp. 509-515. ISSN 0097-7403.

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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.

    Metadata

    Item Type: Article
    School: Birkbeck Schools and Departments > School of Science > Psychological Sciences
    Research Centre: Birkbeck Knowledge Lab
    Depositing User: Administrator
    Date Deposited: 09 May 2013 09:21
    Last Modified: 02 Dec 2016 13:39
    URI: http://eprints.bbk.ac.uk/id/eprint/6626

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