Document Detail

What is the strength of a mask in visual metacontrast masking?
MedLine Citation:
PMID:  17461675     Owner:  NLM     Status:  MEDLINE    
After more than a century of research, the mechanisms underlying visual masking are still hotly debated. One key characteristic of masking is that variations in the stimulus onset asynchrony (SOA) between the target and the mask can lead to either monotonic reductions in the effect of the mask on the target (A-type masking) or an increase in masking for intermediate SOAs and then a decrease in masking for longer SOAs (B-type masking). Past experimental and theoretical work suggested that the type of the masking function depends on the strength of the mask relative to the target. Usually, mask strength is related to energy (stimulus intensity x duration). Here, we show that the overall spatial layout of the mask is a much stronger factor than classical energy to explain the type of masking function.
Varinthira Duangudom; Gregory Francis; Michael H Herzog
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2007-01-26
Journal Detail:
Title:  Journal of vision     Volume:  7     ISSN:  1534-7362     ISO Abbreviation:  J Vis     Publication Date:  2007  
Date Detail:
Created Date:  2007-04-27     Completed Date:  2007-05-08     Revised Date:  2008-04-29    
Medline Journal Info:
Nlm Unique ID:  101147197     Medline TA:  J Vis     Country:  United States    
Other Details:
Languages:  eng     Pagination:  7     Citation Subset:  IM    
School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, USA.
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MeSH Terms
Contrast Sensitivity / physiology*
Models, Psychological*
Perceptual Masking / physiology*
Photic Stimulation / methods
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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