Visual marking and visual change.

Full Abstract

Five experiments investigated the types of changes that disrupt the preview effect--the benefit gained in difficult search tasks from presenting some distractors earlier in time. A shape change with or without an overall luminance change at the location of an old item was found to disrupt the preview effect, whereas an equivalent luminance change alone or an isoluminant color change was not disruptive. Results suggest that (a) relatively low-level visual changes may not be sufficient to abolish the benefit, (b) the benefit most likely occurs through inhibition applied to locations within a location master map, and (c) inhibition need not be applied to surface features of objects.

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Author information

Author/s: Watson, Derrick G (DG); Humphreys, Glyn W (GW);

Affiliation: Department of Psychology, University of Warwick, Coventry, England. d.g.watson(-atsign-)warwick.ac.uk

Journal and publication information

Publication Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't

Journal: Journal of experimental psychology. Human perception and performance (J Exp Psychol Hum Percept Perform), published in United States. (Language: eng)

Reference: 2002-Apr; vol 28 (issue 2) : pp 379-95

Dates: Created 2002/05/09; Completed 2003/01/24; Revised 2006/11/15;

PMID: 11999861, 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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