Document Detail


A new elementary feature of vision.
MedLine Citation:
PMID:  2055706     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Humans can discriminate among elementary features such as orientation, color, and depth in parallel. The author showed that discontinuities in lines, such as a vernier offset, can be detected in a flash presentation with subsequent mask, and an offset, even below the diameter of foveal photoreceptors, is identified among distractors. This result suggests that the visual system simultaneously detects misalignments or gradients of orientation in the hyperacuity range at many positions in the visual field. The direction of the vernier offset, however, cannot be classified simultaneously in several stimuli, but requires serial search.
Authors:
M Fahle
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Investigative ophthalmology & visual science     Volume:  32     ISSN:  0146-0404     ISO Abbreviation:  Invest. Ophthalmol. Vis. Sci.     Publication Date:  1991 Jun 
Date Detail:
Created Date:  1991-07-26     Completed Date:  1991-07-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7703701     Medline TA:  Invest Ophthalmol Vis Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  2151-5     Citation Subset:  IM    
Affiliation:
Center for Biological Information Processing, Massachusetts Institute of Technology, Cambridge.
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MeSH Terms
Descriptor/Qualifier:
Humans
Psychophysics
Random Allocation
Visual Acuity / physiology*
Visual Fields
Visual Pathways / physiology*
Visual Perception / physiology

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


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