| Segregation of chromatic and luminance signals using a novel grating stimulus. | |
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MedLine Citation:
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PMID: 20937716 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Segregation of chromatic and luminance signals in afferent pathways are investigated with a grating stimulus containing luminance and chromatic components of different spatial frequencies. Ganglion cell recordings were obtained from the retinae of macaques (Macaca fascicularis). Cell responses to the 'compound' gratings were compared to responses to standard chromatic and luminance gratings. Parvocellular (PC) pathway cell responses to compound and chromatic gratings were very similar, as were magnocellular (MC) cell responses to compound and luminance gratings. This was the case over a broad range of spatial and temporal frequencies and contrasts. In psychophysical experiments with human observers, discrimination between grating types was possible close to detection threshold. These results are consistent with chromatic and luminance structure in complex patterns being strictly localized in different afferent pathways. This novel stimulus may prove useful in identifying afferent inputs to cortical neurons. |
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Authors:
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Barry B Lee; Hao Sun; Arne Valberg |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't Date: 2010-10-11 |
Journal Detail:
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Title: The Journal of physiology Volume: 589 ISSN: 1469-7793 ISO Abbreviation: J. Physiol. (Lond.) Publication Date: 2011 Jan |
Date Detail:
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Created Date: 2011-01-12 Completed Date: 2011-04-22 Revised Date: 2012-01-02 |
Medline Journal Info:
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Nlm Unique ID: 0266262 Medline TA: J Physiol Country: England |
Other Details:
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Languages: eng Pagination: 59-73 Citation Subset: IM |
Affiliation:
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SUNY Optometry, 33 W. 42nd St, New York, NY 10036, USA. blee@sunyopt.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Color Perception* Color Vision* Contrast Sensitivity Discrimination (Psychology) Humans Macaca fascicularis Male Pattern Recognition, Visual Photic Stimulation Psychophysics Retinal Ganglion Cells / physiology Sensory Thresholds Time Factors Vision, Ocular* Visual Pathways / physiology* |
| Grant Support | |
ID/Acronym/Agency:
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EY 13112/EY/NEI NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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