| Design of a trichromatic cone array. | |
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MedLine Citation:
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PMID: 20168996 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Cones with peak sensitivity to light at long (L), medium (M) and short (S) wavelengths are unequal in number on the human retina: S cones are rare (<10%) while increasing in fraction from center to periphery, and the L/M cone proportions are highly variable between individuals. What optical properties of the eye, and statistical properties of natural scenes, might drive this organization? We found that the spatial-chromatic structure of natural scenes was largely symmetric between the L, M and S sensitivity bands. Given this symmetry, short wavelength attenuation by ocular media gave L/M cones a modest signal-to-noise advantage, which was amplified, especially in the denser central retina, by long-wavelength accommodation of the lens. Meanwhile, total information represented by the cone mosaic remained relatively insensitive to L/M proportions. Thus, the observed cone array design along with a long-wavelength accommodated lens provides a selective advantage: it is maximally informative. |
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Authors:
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Patrick Garrigan; Charles P Ratliff; Jennifer M Klein; Peter Sterling; David H Brainard; Vijay Balasubramanian |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S. Date: 2010-02-12 |
Journal Detail:
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Title: PLoS computational biology Volume: 6 ISSN: 1553-7358 ISO Abbreviation: PLoS Comput. Biol. Publication Date: 2010 Feb |
Date Detail:
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Created Date: 2010-02-19 Completed Date: 2010-05-10 Revised Date: 2010-09-30 |
Medline Journal Info:
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Nlm Unique ID: 101238922 Medline TA: PLoS Comput Biol Country: United States |
Other Details:
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Languages: eng Pagination: e1000677 Citation Subset: IM |
Affiliation:
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Department of Psychology, Saint Joseph's University, Philadelphia, Pennsylvania, USA. patrick.garrigan@sju.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Algorithms Computational Biology / methods* Databases, Factual Humans Light Models, Biological* Photography Retinal Cone Photoreceptor Cells / physiology* Vision, Ocular / physiology* |
| Grant Support | |
ID/Acronym/Agency:
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R01 EY08124/EY/NEI NIH HHS; R01 EY10016/EY/NEI NIH HHS; T32 EY07035/EY/NEI NIH HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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