| Bar-like S-cone stimuli reveal the importance of an intermediate temporal filter. | |
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MedLine Citation:
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PMID: 20360819 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The relative involvement of different temporal frequency-selective filters underlying detection of chromatic stimuli was studied. Diverse spectral stimuli were used, namely flashed blue and yellow light spots, wide bars, and narrow bars. The stimuli were temporally modulated in luminance having constant wavelength. Although the bar-like stimuli apparently reduced the sensitivity at short and long wavelengths, the cone-opponent mechanism still remained responsible for the actual stimulus detection at different temporal frequencies. The bar-like stimuli increased sensitivity for temporal frequencies around 3-6 Hz, revealing involvement of an intermediate temporal frequency-selective filter in detection, the so-called transient-1 filter. A probability summation model for the method of adjustment was developed that assumes that detection depends on the properties of the temporal filters underlying the temporal frequency-sensitivity curve. The model supports the notion that at least two temporal frequency-selective filters are necessary to account for the shape of the sensitivity curves obtained for blue bar-like stimuli. |
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Authors:
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Rigmor C Baraas; Janus J Kulikowski; Mark R Muldoon |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of the Optical Society of America. A, Optics, image science, and vision Volume: 27 ISSN: 1520-8532 ISO Abbreviation: J Opt Soc Am A Opt Image Sci Vis Publication Date: 2010 Apr |
Date Detail:
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Created Date: 2010-04-02 Completed Date: 2010-06-23 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9800943 Medline TA: J Opt Soc Am A Opt Image Sci Vis Country: United States |
Other Details:
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Languages: eng Pagination: 766-80 Citation Subset: IM |
Affiliation:
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Department of Optometry and Visual Science, Buskerud University College, 3611 Kongsberg, Norway. rigmor.baraas@hibu.no |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Color Perception
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physiology* Models, Biological* Photic Stimulation* Probability Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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