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Modelling distractor devaluation (DD) and its neurophysiological correlates

Fragopanagos, N. and Cristescu, T. and Goolsby, B.A. and Kiss, Monika and Eimer, Martin and Nobre, A.C. and Raymond, J.E. and Shapiro, K.L. and Taylor, J.G. (2009) Modelling distractor devaluation (DD) and its neurophysiological correlates. Neuropsychologia 47 (12), pp. 2354-2366. ISSN 0028-3932.

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Official URL: http://dx.doi.org/10.1016/j.neuropsychologia.2008....

Abstract

A series of recent studies have shown that selective attention can influence the emotional value of both selected as well as ignored items. Specifically, ignored items (distractors) were consistently rated less positively in emotional evaluations, following attentional selection, relative to (typically) simultaneously presented items (targets). Furthermore, a known electrophysiological index of attentional selectivity (N2pc) was shown to correlate with the magnitude of the observed ‘distractor devaluation’ (DD). A neural model is presented here to account for these findings by means of a plausible mechanism linking attentional processes to emotional evaluations. This mechanism relies on the transformation of attentional inhibition of the distractor into a reduction of the value of that distractor. The model is successful in reproducing the existent behavioural results as well as the observed link between the magnitude of the attentional N2pc and the magnitude of DD. Moreover, the model proposes a series of testable hypotheses as well as specific predictions that call for further experimental investigation.

Item Type: Article
Keyword(s) / Subject(s): DD, distractor devaluation, ME, mere exposure, PFC, prefrontal cortex, PPC, posterior parietal cortex, FFA, fusiform face area, OFC, orbitofrontal cortex, AMG, amygdala
School or Research Centre: Birkbeck Schools and Research Centres > School of Science > Psychological Sciences
Depositing User: Administrator
Date Deposited: 06 Jan 2011 10:04
Last Modified: 17 Apr 2013 12:19
URI: http://eprints.bbk.ac.uk/id/eprint/2405

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