Document Detail

Spatiotemporal filters in the detection of background modulation targets.
MedLine Citation:
PMID:  10795631     Owner:  NLM     Status:  MEDLINE    
The background modulation method has been proposed as a useful test of early visual mechanisms [Biol. Cybern. 37, 77 (1980); Biol. Cybern. 47, 173 (1983)]. The task involves measuring detection thresholds for a luminous spot (increment) drifting over a spatially or temporally modulated background. The study explores the nature of the detecting mechanism in terms of spatial and temporal filters for both spatial and temporal background modulations. In both cases we find that thresholds can be explained by spatial contrast cues generated by the moving spot and that their spatiotemporal characteristics suggest detection by magnocellular processes.
A M McKendrick; D R Badcock; A J Vingrys
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of the Optical Society of America. A, Optics, image science, and vision     Volume:  17     ISSN:  1084-7529     ISO Abbreviation:  J Opt Soc Am A Opt Image Sci Vis     Publication Date:  2000 May 
Date Detail:
Created Date:  2000-05-24     Completed Date:  2000-05-24     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  9800943     Medline TA:  J Opt Soc Am A Opt Image Sci Vis     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  836-45     Citation Subset:  IM; S    
Department of Optometry and Vision Sciences, University of Melbourne, Victoria, Australia.
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MeSH Terms
Contrast Sensitivity / physiology
Models, Biological*
Photic Stimulation / methods
Sensory Thresholds
Space Perception / physiology*
Time Perception / physiology*
Vision, Ocular / physiology*

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