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Faster target selection in preview visual search depends on luminance onsets: behavioral and electrophysiological evidence

Kiss, Monika and Eimer, Martin (2011) Faster target selection in preview visual search depends on luminance onsets: behavioral and electrophysiological evidence. Attention, Perception & Psychophysics 73 (6), pp. 1637-1642. ISSN 1943-3921.

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Official URL: http://dx.doi.org/10.3758/s13414-011-0165-z

Abstract

To investigate how target detection in visual search is modulated when a subset of distractors is presented in advance (preview search), we measured search performance and the N2pc component as an electrophysiological marker of attentional target selection. Targets defined by a color/shape conjunction were detected faster and the N2pc emerged earlier in preview search relative to a condition in which all items were presented simultaneously. Behavioral and electrophysiological preview benefits disappeared when stimuli were equiluminant with their background, in spite of the fact that targets were feature singletons among the new items in preview search. The results demonstrate that previewing distractors expedites the spatial selection of targets at early sensory-perceptual stages, and that these preview benefits depend on rapid attentional capture by luminance onsets.

Item Type: Article
School or Research Centre: Birkbeck Schools and Research Centres > School of Science > Psychological Sciences
Depositing User: Administrator
Date Deposited: 15 Nov 2011 09:53
Last Modified: 17 Apr 2013 12:21
URI: http://eprints.bbk.ac.uk/id/eprint/4324

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