Document Detail


Grouping illumination frameworks.
MedLine Citation:
PMID:  22141587     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
According to Koffka (1935), the lightness of a target surface is determined by the relationship between the target and the illumination frame of reference to which it belongs. However, each scene contains numerous illumination frames, and judging each one separately would lead to an enormous amount of computing. Grouping those frames that are in the same illumination would simplify the computation.We report a series of experiments demonstrating that nonadjacent regions of the visual field under the same illumination level are perceptually grouped together and function, to some extent, as a single framework. A small coplanar group of patches under its own illumination exhibits compression of perceived range of gray shades. We obtained the reduction in compression in the presence of an identically illuminated 25-patch Mondrian tableau mounted nearby the coplanar group. The influence of the Mondrian display was reduced when it was (a) moved laterally away from the test display, (b) moved farther back in depth from the test display, or (c) rotated to a different orientation. (PsycINFO Database Record (c) 2011 APA, all rights reserved).
Authors:
Sunčica Zdravković; Elias Economou; Alan Gilchrist
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-5
Journal Detail:
Title:  Journal of experimental psychology. Human perception and performance     Volume:  -     ISSN:  1939-1277     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7502589     Medline TA:  J Exp Psychol Hum Percept Perform     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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