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| Research article summary (published 30 May 2002): |
Investigating spatial vision and dynamic attentional selection using a gaze-contingent multiresolutional display.
Full Abstract
This study examined spatial vision and attentional selection using a gaze-contingent multiresolutional display, with a dynamic, gaze-centered, high-resolution window and lower resolution periphery. Visual search times and eye movements from 15 participants in a 3 x 3 design (Window Radius x Peripheral Resolution) suggest that contrast sensitivity as a function of retinal eccentricity affects attentional selection and visual processing. Smaller windows led to longer search times and shorter saccades; lower peripheral resolution also shortened saccades (all ps < .05) as a result of avoiding fixating degraded areas. Fixation durations, although longer for smaller windows (p < .05), were unaffected by whether the next saccade went within or outside the window. These results are explained through (a) competition among potential saccade targets where above-threshold filtering reduces an object's relative salience and (b) generally disrupted visual processing.
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Author information
Author/s: Loschky, Lester C (LC); McConkie, George W (GW);
Affiliation: Department of Psychology, University of Illinois at Urbana-Champaign, USA. loschky(-atsign-)uiuc.edu
Journal and publication information
Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.
Journal: Journal of experimental psychology. Applied (J Exp Psychol Appl), published in United States. (Language: eng)
Reference: 2002-Jun; vol 8 (issue 2) : pp 99-117
Dates: Created 2002/06/21; Completed 2002/08/19; Revised 2006/11/15;
PMID: 12075694, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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