Visual masking during the attentional blink: tests of the object substitution hypothesis.

Full Abstract

When 2 masked targets are presented in a rapid sequence, correct identification of the 1st hinders identification of the 2nd. Visual masking of the 2nd target plays a critical role during this 2nd-target deficit, or "attentional blink" (AB). The object substitution hypothesis (B. Giesbrecht & V. Di Lollo, 1998) predicts that late-stage visual processes involved in object substitution mediate masking of the 2nd target during AB, whereby stronger masking should produce a more severe deficit. Six experiments are presented, together testing this hypothesis. Although masking by object substitution was observed, it did not interact with the AB. An alternative hypothesis is proposed stating that mostly early-stage visual processes mediate the masking effects that are critical to the AB.

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Author information

Author/s: Giesbrecht, Barry (B); Bischof, Walter F (WF); Kingstone, Alan (A);

Affiliation: Center for Cognitive Neuroscience, Duke University, USA. giesbrecht(-atsign-)ucdavis.edu

Journal and publication information

Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial; 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: 2003-Feb; vol 29 (issue 1) : pp 238-58

Dates: Created 2003/04/02; Completed 2003/06/11; Revised 2006/11/15;

PMID: 12669760, 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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