Does perceptual belongingness affect lightness constancy?

Hdl Handle:
http://hdl.handle.net/10149/97392
Title:
Does perceptual belongingness affect lightness constancy?
Authors:
Soranzo, A. (Alessandro); Agostini, T. (Tiziano)
Affiliation:
University of Teesside. School of Social Sciences and Law. Department of Psychology.
Citation:
Soranzo, A. and Agostini, T. (2006) 'Does perceptual belongingness affect lightness constancy?', Perception, 35 (2), pp.185-192.
Publisher:
Pion
Journal:
Perception
Issue Date:
2006
URI:
http://hdl.handle.net/10149/97392
DOI:
10.1068/p5342
Abstract:
The relation between perceptual belongingness and lightness perception has historically been studied in the contrast domain (Benary, 1924 Psychologische Forschung 5 131 - 142). However, scientists have shown that two equal grey patches may differ in lightness when belonging to different reflecting surfaces. We extend this investigation to the constancy domain. In a CRT simulation of a bipartite field of illumination, we manipulated the arrangement of twelve patches: six squares and six diamonds. Patches of the same shape could be placed: (i) all within the same illumination field; or (ii) forming a row across the illumination fields. Furthermore, we manipulated proximity between the innermost patches and the illumination edge. The patches could be (i) touching (forming an X-junction); or (ii) not touching (not forming an X-junction). Observers were asked to perform a lightness match between two additional patches, one illuminated and the other in shadow. We found better lightness constancy when the patches of the same shape formed a row across the fields, with no effect of X-junctions. Since lightness constancy is improved by strengthening the belongingness across the illumination fields, we conclude that belongingness might help the visual system to aggregate the differently illuminated surfaces, and facilitate the scission process.
Type:
Article
Language:
en
Keywords:
perceptual belongingness; lightness perception; CRT simulation; lightness constancy
ISSN:
0301-0066; 1468-4233
Rights:
Subject to restrictions, author can archive post-print (ie final draft post-refereeing). For full details see http://www.sherpa.ac.uk/romeo/ [Accessed 26/04/2010]
Citation Count:
2 [Scopus, 26/04/2010]

Full metadata record

DC FieldValue Language
dc.contributor.authorSoranzo, A. (Alessandro)en
dc.contributor.authorAgostini, T. (Tiziano)en
dc.date.accessioned2010-04-26T13:48:02Z-
dc.date.available2010-04-26T13:48:02Z-
dc.date.issued2006-
dc.identifier.citationPerception; 35 (2): 185-192en
dc.identifier.issn0301-0066-
dc.identifier.issn1468-4233-
dc.identifier.doi10.1068/p5342-
dc.identifier.urihttp://hdl.handle.net/10149/97392-
dc.description.abstractThe relation between perceptual belongingness and lightness perception has historically been studied in the contrast domain (Benary, 1924 Psychologische Forschung 5 131 - 142). However, scientists have shown that two equal grey patches may differ in lightness when belonging to different reflecting surfaces. We extend this investigation to the constancy domain. In a CRT simulation of a bipartite field of illumination, we manipulated the arrangement of twelve patches: six squares and six diamonds. Patches of the same shape could be placed: (i) all within the same illumination field; or (ii) forming a row across the illumination fields. Furthermore, we manipulated proximity between the innermost patches and the illumination edge. The patches could be (i) touching (forming an X-junction); or (ii) not touching (not forming an X-junction). Observers were asked to perform a lightness match between two additional patches, one illuminated and the other in shadow. We found better lightness constancy when the patches of the same shape formed a row across the fields, with no effect of X-junctions. Since lightness constancy is improved by strengthening the belongingness across the illumination fields, we conclude that belongingness might help the visual system to aggregate the differently illuminated surfaces, and facilitate the scission process.en
dc.language.isoenen
dc.publisherPionen
dc.rightsSubject to restrictions, author can archive post-print (ie final draft post-refereeing). For full details see http://www.sherpa.ac.uk/romeo/ [Accessed 26/04/2010]en
dc.subjectperceptual belongingnessen
dc.subjectlightness perceptionen
dc.subjectCRT simulationen
dc.subjectlightness constancyen
dc.titleDoes perceptual belongingness affect lightness constancy?en
dc.typeArticleen
dc.contributor.departmentUniversity of Teesside. School of Social Sciences and Law. Department of Psychology.en
dc.identifier.journalPerceptionen
ref.citationcount2 [Scopus, 26/04/2010]en
or.citation.harvardSoranzo, A. and Agostini, T. (2006) 'Does perceptual belongingness affect lightness constancy?', Perception, 35 (2), pp.185-192.-
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