Repetition of distractor sets improves visual search performance in hemispatial neglect

2.50
Hdl Handle:
http://hdl.handle.net/2336/78119
Title:
Repetition of distractor sets improves visual search performance in hemispatial neglect
Authors:
Saevarsson, Styrmir; Joelsdottir, Sigrun Sif; Hjaltason, Haukur; Kristjansson, Arni
Citation:
Neuropsychologia. 2008, 46(4):1161-9
Issue Date:
7-Mar-2008
Abstract:
Priming from repeated distractor sets, or search context, in conjunctive visual search was examined in four patients with hemispatial neglect. In the first experiment overall context was either changed or repeated while the target was always the same to control for any modulatory effect of target priming. Considerable priming was seen from repeated context. In the second experiment the context was either repeated on the left side, on the right side, on both sides, or the context was new. Priming from repeated context was found to arise from the left visual field, as well as the right visual field, as well as when overall context was repeated. Brief masked displays were used in experiment 3, the results again showing strong priming from repeated overall context. The results of the three experiments suggest that visual grouping, or perceptual organization, of distractor sets is relatively intact in the affected hemifield of parietal neglect patients. Furthermore, repetition of context may even temporarily ameliorate neglect symptoms in search. These findings are consistent with claims that grouping is distinct from attentional processing and that it operates at lower levels of the perceptual hierarchy.
Description:
To access publisher full text version of this article. Please click on the hyperlink in Additional Links field
Additional Links:
http://dx.doi.org/10.1016/j.neuropsychologia.2007.10.020

Full metadata record

DC FieldValue Language
dc.contributor.authorSaevarsson, Styrmir-
dc.contributor.authorJoelsdottir, Sigrun Sif-
dc.contributor.authorHjaltason, Haukur-
dc.contributor.authorKristjansson, Arni-
dc.date.accessioned2009-08-21T09:13:16Z-
dc.date.available2009-08-21T09:13:16Z-
dc.date.issued2008-03-07-
dc.date.submitted2009-08-21-
dc.identifier.citationNeuropsychologia. 2008, 46(4):1161-9en
dc.identifier.issn0028-3932-
dc.identifier.pmid18068736-
dc.identifier.doi10.1016/j.neuropsychologia.2007.10.020-
dc.identifier.urihttp://hdl.handle.net/2336/78119-
dc.descriptionTo access publisher full text version of this article. Please click on the hyperlink in Additional Links fielden
dc.description.abstractPriming from repeated distractor sets, or search context, in conjunctive visual search was examined in four patients with hemispatial neglect. In the first experiment overall context was either changed or repeated while the target was always the same to control for any modulatory effect of target priming. Considerable priming was seen from repeated context. In the second experiment the context was either repeated on the left side, on the right side, on both sides, or the context was new. Priming from repeated context was found to arise from the left visual field, as well as the right visual field, as well as when overall context was repeated. Brief masked displays were used in experiment 3, the results again showing strong priming from repeated overall context. The results of the three experiments suggest that visual grouping, or perceptual organization, of distractor sets is relatively intact in the affected hemifield of parietal neglect patients. Furthermore, repetition of context may even temporarily ameliorate neglect symptoms in search. These findings are consistent with claims that grouping is distinct from attentional processing and that it operates at lower levels of the perceptual hierarchy.en
dc.language.isoenen
dc.publisherPergamon Pressen
dc.relation.urlhttp://dx.doi.org/10.1016/j.neuropsychologia.2007.10.020en
dc.subject.meshAttentionen
dc.subject.meshDiscrimination Learningen
dc.subject.meshFemaleen
dc.subject.meshHumansen
dc.subject.meshMaleen
dc.subject.meshMiddle Ageden
dc.subject.meshPattern Recognition, Visualen
dc.subject.meshPerceptual Disordersen
dc.subject.meshPhotic Stimulationen
dc.subject.meshReaction Timeen
dc.subject.meshSet (Psychology)en
dc.subject.meshVisual Perceptionen
dc.titleRepetition of distractor sets improves visual search performance in hemispatial neglecten
dc.typeArticleen
dc.contributor.departmentDepartment of Psychology, Neuropsychology, University of Freiburg, Germany. saevarsson@daad-alumni.deen
dc.identifier.journalNeuropsychologiaen

Related articles on PubMed

All Items in Hirsla are protected by copyright, with all rights reserved, unless otherwise indicated.