| Peripheral hyperacuity: three-dot bisection scales to a single factor from 0 to 10 degrees. | |
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MedLine Citation:
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PMID: 3625336 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Performance of three-dot bisection was determined as a function of the feature separation at eccentricities of 0-10 deg along the inferior vertical field meridian by using dot stimuli scaled in size to compensate for eccentricity. For these briefly flashed dot stimuli, the entire function of three-dot bisection acuity against dot separation worsens away from the fovea with a single scaling factor that is compatible with the change of the cortical magnification factor in area V1. When the presentation duration of the stimulus was lengthened from 150 msec to 1 sec, the improvement was much greater in the fovea than at 10-deg eccentricity for closely separated stimuli. We attribute this difference to a luminance cue (detection of a brightness change) that is present for a long stimulus duration at small separations in the fovea, but not in the periphery. |
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Authors:
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Y L Yap; D M Levi; S A Klein |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Journal of the Optical Society of America. A, Optics and image science Volume: 4 ISSN: 0740-3232 ISO Abbreviation: J Opt Soc Am A Publication Date: 1987 Aug |
Date Detail:
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Created Date: 1987-10-13 Completed Date: 1987-10-13 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 8402086 Medline TA: J Opt Soc Am A Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1554-61 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Fovea Centralis
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physiology Humans Retina / physiology* Sensory Thresholds Space Perception* Time Factors Visual Acuity* Visual Perception |
| Grant Support | |
ID/Acronym/Agency:
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R01EY01728/EY/NEI NIH HHS; R01EY04776/EY/NEI NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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