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Article: Dimension-specific signal modulation in visual search: evidence from inter-stimulus surround suppression.

TitleDimension-specific signal modulation in visual search: evidence from inter-stimulus surround suppression.
Authors
KeywordsSignal modulation
Surround suppression
Visual search
Issue Date2012
PublisherAssociation for Research in Vision and Ophthalmology. The Journal's web site is located at http://wwwjournalofvisionorg/
Citation
Journal Of Vision, 2012, v. 12 n. 4, p. 1-10 How to Cite?
AbstractA fundamental task for the visual system is to determine where to attend next. In general, attention is guided by visual saliency. Computational models suggest that saliency values are estimated through an iterative process in which each visual item suppresses each other item's saliency, especially for those with close proximity. To investigate this proposal, we tested the effect of two salient distractors on visual search for a size target. While fixing the target-to-distractor distance, we manipulated the distance between two distractors. If two salient distractors suppressed each other when they were close together, they should interfere with search less; this was exactly what we found. However, we observed such a distance effect only for distractors of the same dimension (e.g., both defined in color) but not for those of different dimensions (e.g., one defined in color and the other in shape), displaying specificity to a perceptual dimension. Therefore, we conclude that saliency in visual search is calculated through a surround suppression process that occurs at a dimension-specific level.
Persistent Identifierhttp://hdl.handle.net/10722/169110
ISSN
2015 Impact Factor: 2.341
2015 SCImago Journal Rankings: 1.042
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChan, LKen_US
dc.contributor.authorHayward, WGen_US
dc.date.accessioned2012-10-08T03:41:54Z-
dc.date.available2012-10-08T03:41:54Z-
dc.date.issued2012en_US
dc.identifier.citationJournal Of Vision, 2012, v. 12 n. 4, p. 1-10en_US
dc.identifier.issn1534-7362en_US
dc.identifier.urihttp://hdl.handle.net/10722/169110-
dc.description.abstractA fundamental task for the visual system is to determine where to attend next. In general, attention is guided by visual saliency. Computational models suggest that saliency values are estimated through an iterative process in which each visual item suppresses each other item's saliency, especially for those with close proximity. To investigate this proposal, we tested the effect of two salient distractors on visual search for a size target. While fixing the target-to-distractor distance, we manipulated the distance between two distractors. If two salient distractors suppressed each other when they were close together, they should interfere with search less; this was exactly what we found. However, we observed such a distance effect only for distractors of the same dimension (e.g., both defined in color) but not for those of different dimensions (e.g., one defined in color and the other in shape), displaying specificity to a perceptual dimension. Therefore, we conclude that saliency in visual search is calculated through a surround suppression process that occurs at a dimension-specific level.en_US
dc.languageengen_US
dc.publisherAssociation for Research in Vision and Ophthalmology. The Journal's web site is located at http://wwwjournalofvisionorg/en_US
dc.relation.ispartofJournal of visionen_US
dc.subjectSignal modulation-
dc.subjectSurround suppression-
dc.subjectVisual search-
dc.subject.meshAttention - Physiologyen_US
dc.subject.meshFemaleen_US
dc.subject.meshField Dependence-Independenceen_US
dc.subject.meshHumansen_US
dc.subject.meshMaleen_US
dc.subject.meshNeural Inhibition - Physiologyen_US
dc.subject.meshPhotic Stimulation - Methodsen_US
dc.subject.meshRetina - Physiologyen_US
dc.subject.meshVision, Ocular - Physiologyen_US
dc.subject.meshVisual Fields - Physiologyen_US
dc.subject.meshVisual Pathways - Physiologyen_US
dc.subject.meshVisual Perception - Physiologyen_US
dc.titleDimension-specific signal modulation in visual search: evidence from inter-stimulus surround suppression.en_US
dc.typeArticleen_US
dc.identifier.emailChan, LK:clouis@graduate.hku.hken_US
dc.identifier.emailHayward, WG:whayward@hkucc.hku.hken_US
dc.identifier.authorityChan, LK=rp00851en_US
dc.identifier.authorityHayward, WG=rp00630en_US
dc.description.naturelink_to_OA_fulltexten_US
dc.identifier.doi10.1167/12.4.10en_US
dc.identifier.pmid22514331en_US
dc.identifier.scopuseid_2-s2.0-84861137930en_US
dc.identifier.hkuros205457-
dc.identifier.volume12en_US
dc.identifier.issue4en_US
dc.identifier.spage1en_US
dc.identifier.eissn1534-7362-
dc.identifier.isiWOS:000303910300010-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridChan, LK=37039134300en_US
dc.identifier.scopusauthoridHayward, WG=7006352956en_US

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