| Effect of sampling array irregularity and window size on the discrimination of sampled gratings. | |
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MedLine Citation:
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PMID: 19815023 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The effect of sampling irregularity and window size on orientation discrimination was investigated using discretely sampled gratings as stimuli. For regular sampling arrays, visual performance could be accounted for by a theoretical analysis of aliasing produced by undersampling. For irregular arrays produced by adding noise to the location of individual samples, the incidence of perceived orientation reversal declined and the spatial frequency range of flawless performance expanded well beyond the nominal Nyquist frequency. These results provide a psychophysical method to estimate the spatial density and the degree of irregularity in the neural sampling arrays that limit human visual resolution. |
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Authors:
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David W Evans; Yizhong Wang; Kevin M Haggerty; Larry N Thibos |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Vision research Volume: 50 ISSN: 1878-5646 ISO Abbreviation: Vision Res. Publication Date: 2010 Jan |
Date Detail:
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Created Date: 2009-12-17 Completed Date: 2011-03-14 Revised Date: 2011-09-26 |
Medline Journal Info:
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Nlm Unique ID: 0417402 Medline TA: Vision Res Country: England |
Other Details:
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Languages: eng Pagination: 20-30 Citation Subset: IM |
Affiliation:
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School of Optometry, Indiana University, Bloomington, IN 47405, United States. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Humans Pattern Recognition, Visual Photic Stimulation Sensory Thresholds* Visual Acuity* Visual Fields / physiology Visual Perception* |
| Grant Support | |
ID/Acronym/Agency:
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R01 EY005109-24/EY/NEI NIH HHS |
| Comments/Corrections | |
Erratum In:
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Vision Res. 2010 May 12;50(10):995 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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