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| Research article summary (published 30 Jan 2003): |
Serial deployment of attention during visual search.
Full Abstract
This study examined whether objects are attended in serial or in parallel during a demanding visual search task. A component of the event-related potential waveform, the N2pc wave, was used as a continuous measure of the allocation of attention to possible targets in the search arrays. Experiment 1 demonstrated that the relative allocation of attention shifts rapidly, favoring one item and then another. In Experiment 2, a paradigm was used that made it possible to track the absolute allocation of attention to individual items. This experiment showed that attention was allocated to one object for 100-150 ms before attention began to be allocated to the next object. These findings support models of attention that posit serial processing in demanding visual search tasks.
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Author information
Author/s: Woodman, Geoffrey F (GF); Luck, Steven J (SJ);
Affiliation: Department of Psychology, University of Iowa, Iowa City 52242-1407, USA. geoffrey.f.woodman@vanderbilt.edu
Grants: 1 F31 MH12995-01 (Agency:United States NIMH) ; MH63001 (Agency:United States NIMH)
Journal and publication information
Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial; 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. Human perception and performance (J Exp Psychol Hum Percept Perform), published in United States. (Language: eng)
Reference: 2003-Feb; vol 29 (issue 1) : pp 121-38
Dates: Created 2003/04/02; Completed 2003/06/11; Revised 2007/11/14;
PMID: 12669752, 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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