Inhibition of return for objects and locations in static displays.

Full Abstract

When orienting attention, inhibition mechanisms prevent the return of attention to previously examined stimuli. This inhibition of the return of attention (IOR) has been shown to be associated additively with location- and object-based representations. That is, when static objects are attended, IOR is associated with both the object and the location cued, and hence IOR is larger than when only spatial location is attended. Recently McAuliffe, Pratt, and O'Donnell (2001) failed to observe such additive effects except under a narrow set of conditions (at short cue-target intervals and using mixed blocks in which object- and pure location-based effects were probed in the same display). The present study shows that additive IOR effects are observed under conditions that violate all of these boundary conditions. The results also show that IOR is modulated by internal structural properties of objects. These findings are cosistent with the hypothesis that IOR operates over functionally independent object- and location-based frames of reference.

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Author information

Author/s: Leek, E C (EC); Reppa, L (L); Tipper, S P (SP);

Affiliation: Centre for Cognitive Neuroscience, School of Psychology, University of Wales, Bangor, Gwynedd, Wales. e.c.leek(-atsign-)bangor.ac.uk

Journal and publication information

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

Journal: Perception & psychophysics (Percept Psychophys), published in United States. (Language: eng)

Reference: 2003-Apr; vol 65 (issue 3) : pp 388-95

Dates: Created 2003/06/04; Completed 2003/07/08; Revised 2006/11/15;

PMID: 12785069, 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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