Document Detail

The effect of figural manipulations on brightness differences in the Benary cross.
MedLine Citation:
PMID:  21805916     Owner:  NLM     Status:  In-Process    
The Benary cross is a classical demonstration showing that the perceived brightness f an area is not solely determined by its luminance, but also by the context in which it is embedded. Despite the fact that two identical grey triangles are flanked by an equal amount of black and white, one of the triangles is perceived as being lighter than the other. It has been argued that the junctions surrounding a test area are crucial in determining brightness. Here, we explored how different aspects influencing perceptual organisation influence perceived figure-background relations in the Benary cross and, with that, the perceived brightness of the triangular patches in our stimuli. The results of a cancellation task confirm that the alignment of contours at junctions indeed has a strong influence on an area's brightness. At the same time, however, the Benary effect is also influenced by the overall symmetry of the cross and its orientation.
Mark Vergeer; Rob van Lier
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Perception     Volume:  40     ISSN:  0301-0066     ISO Abbreviation:  Perception     Publication Date:  2011  
Date Detail:
Created Date:  2011-08-02     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0372307     Medline TA:  Perception     Country:  England    
Other Details:
Languages:  eng     Pagination:  392-408     Citation Subset:  IM    
Radboud University Nijmegen, Donders Institute for Brain, Cognition and Behaviour, PO Box 9104, 6500 HE Nijmegen, The Netherlands.
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