| Three-dimensional shape perception from chromatic orientation flows. | |
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MedLine Citation:
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PMID: 16961963 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The role of chromatic information in 3-D shape perception is controversial. We resolve this controversy by showing that chromatic orientation flows are sufficient for accurate perception of 3-D shape. Chromatic flows required less cone contrast to convey shape than did achromatic flows, thus ruling out luminance artifacts as a problem. Luminance artifacts were also ruled out by a protanope's inability to see 3-D shape from chromatic flows. Since chromatic orientation flows can only be extracted from retinal images by neurons that are responsive to color modulations and selective for orientation, the psychophysical results also resolve the controversy over the existence of such neurons. In addition, we show that identification of 3-D shapes from chromatic flows can be masked by luminance modulations, indicating that it is subserved by orientation-tuned neurons sensitive to both chromatic and luminance modulations. |
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Authors:
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Qasim Zaidi; Andrea Li |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: Visual neuroscience Volume: 23 ISSN: 0952-5238 ISO Abbreviation: Vis. Neurosci. Publication Date: 2006 May-Aug |
Date Detail:
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Created Date: 2006-09-11 Completed Date: 2006-10-18 Revised Date: 2011-09-26 |
Medline Journal Info:
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Nlm Unique ID: 8809466 Medline TA: Vis Neurosci Country: England |
Other Details:
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Languages: eng Pagination: 323-30 Citation Subset: IM |
Affiliation:
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SUNY College of Optometry, Department of Vision Sciences, New York, New York 10036, USA. qz@sunyopt.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Color Computer Simulation Form Perception / physiology* Humans Light* Orientation / physiology* Pattern Recognition, Visual / physiology Photic Stimulation / methods Psychophysics / methods |
| Grant Support | |
ID/Acronym/Agency:
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EY07556/EY/NEI NIH HHS; EY13312/EY/NEI NIH HHS; R01 EY007556-13/EY/NEI NIH HHS; R01 EY007556-14/EY/NEI NIH HHS; R01 EY007556-15/EY/NEI NIH HHS; R01 EY007556-16/EY/NEI NIH HHS; R01 EY007556-17A2/EY/NEI NIH HHS; R01 EY007556-18/EY/NEI NIH HHS; R01 EY007556-19/EY/NEI NIH HHS; R01 EY007556-20/EY/NEI NIH HHS; R01 EY013312-01/EY/NEI NIH HHS; R01 EY013312-02/EY/NEI NIH HHS; R01 EY013312-03/EY/NEI NIH HHS; R01 EY013312-04/EY/NEI NIH HHS; R01 EY013312-05/EY/NEI NIH HHS; R01 EY013312-06/EY/NEI NIH HHS; R01 EY013312-07/EY/NEI NIH HHS; R01 EY013312-08/EY/NEI NIH HHS; R01 EY013312-09/EY/NEI NIH HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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