Show simple item record

dc.contributor.authorArguin, Martin
dc.contributor.authorJoanette, Yves
dc.contributor.authorCavanagh, Patrick
dc.date.accessioned2010-02-03T16:53:27Z
dc.date.issued1993
dc.identifier.citationArguin, Martin, Yves Joanette, and Patrick Cavanagh. 1993. Visual search for feature and conjunction targets with an attention deficit. Journal of Cognitive Neuroscience 5(4): 436-452.en_US
dc.identifier.issn0898-929Xen_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:3626283
dc.description.abstractBrain-damaged subjects who had previously been identified as suffering from a visual attention deficit for contralesional stimulation were tested on a series of visual search tasks. The experiments examined the hypothesis that the processing of single features is preattentive but that feature integration, necessary for the correct perception of conjunctions of features, requires attention (Treisman & Gelade, 1980 Treisman & Sato, 1990). Subjects searched for a feature target (orientation or color) or for a conjunction target (orientation and color) in unilateral displays in which the number of items presented was variable. Ocular fixation was controlled so that trials on which eye movements occurred were cancelled. While brain-damaged subjects with a visual attention disorder (VAD subjects) performed similarly to normal controls in feature search tasks, they showed a marked deficit in conjunction search. Specifically, VAD subjects exhibited an important reduction of their serial search rates for a conjunction target with contralesional displays. In support of Treisman's feature integration theory, a visual attention deficit leads to a marked impairment in feature integration whereas it does not appear to affect feature encoding.en_US
dc.description.sponsorshipPsychologyen_US
dc.language.isoen_USen_US
dc.publisherMassachusetts Institute of Technology Pressen_US
dc.relation.isversionofdoi:10.1162/jocn.1993.5.4.436en_US
dash.licenseLAA
dc.titleVisual Search for Feature and Conjunction Targets with an Attention Deficiten_US
dc.typeJournal Articleen_US
dc.description.versionProofen_US
dc.relation.journalJournal of Cognitive Neuroscienceen_US
dash.depositing.authorCavanagh, Patrick
dc.date.available2010-02-03T16:53:27Z
dc.identifier.doi10.1162/jocn.1993.5.4.436*
dash.contributor.affiliatedCavanagh, Patrick


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record