Viewpoint costs occur during consolidation: evidence from the attentional blink.

Full Abstract

Do the viewpoint costs incurred when naming rotated familiar objects arise during initial identification or during consolidation? To answer this question we employed an attentional blink (AB) task where two target objects appeared amongst a rapid stream of distractor objects. Our assumption was that while both targets and distractors undergo initial identification only targets are consolidated in a form that allows overt report. We presented line drawings of objects with a usual upright canonical orientation, and separately manipulated the orientation of targets and distractors. In two experiments, targets were defined by colour, whereas in a third experiment they were defined by semantic category. Target 1 orientation influenced the AB, with objects rotated by 90 degrees causing a larger second target deficit than upright and upside-down objects. However, distractor orientation did not affect the magnitude of the second target deficit, regardless of whether targets were defined by colour or semantic category. Taken together, these findings suggest that the visual representations involved in the preliminary recognition of familiar objects are viewpoint-invariant and that viewpoint costs are incurred when these objects are consolidated for report.

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Author information

Author/s: Dux, Paul E (PE); Harris, Irina M (IM);

Affiliation: Department of Psychology, Vanderbilt University, 428 Wilson Hall, 111 21st Ave. So, Nashville, TN 37203, USA. paul.dux(-atsign-)vanderbilt.edu

Journal and publication information

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

Journal: Cognition (Cognition), published in Netherlands. (Language: eng)

Reference: 2007-Jul; vol 104 (issue 1) : pp 47-58

Dates: Created 2007/04/30; Completed 2007/07/26;

PMID: 16797522, status: MEDLINE (last retrieval date: 12/26/2008)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Attention
Blinking

Humans
Visual Perception

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