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  Independence and interaction of luminance and chromatic contributions to spatial hyperacuity performance.

Cooper, B., & Lee, B. B. (2014). Independence and interaction of luminance and chromatic contributions to spatial hyperacuity performance. Journal of the Optical Society of America A, 31(4), A394-A400. doi:10.1364/JOSAA.31.00A394.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-8446-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-CC65-4
Genre: Journal Article

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2028711.pdf (Publisher version), 423KB
 
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 Creators:
Cooper, B., Author
Lee, B. B.1, Author              
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1Emeritus Group of Membrane Biophysics, MPI for Biophysical Chemistry, Max Planck Society, ou_1571137              

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 Abstract: Here we test interactions of luminance and chromatic input to spatial hyperacuity mechanisms. First, we tested alignment of luminance and chromatic gratings matched or mismatched in contrast polarity or grating type. Thresholds with matched gratings were low while all mismatched pairs were elevated. Second, we determined alignment acuity as a function of luminance or chromatic contrast alone or in the presence of constant contrast components of the other type. For in-phase components, performance followed the envelope of the more sensitive mechanism. However, polarity reversals revealed an asymmetric effect for luminance and chromatic conditions, which suggested that luminance can override chromatic mechanisms in hyperacuity; we interpret these findings in the context of spatial mechanisms.

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Language(s): eng - English
 Dates: 2014-03-112014-04
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.1364/JOSAA.31.00A394
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Title: Journal of the Optical Society of America A
Source Genre: Journal
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Pages: - Volume / Issue: 31 (4) Sequence Number: - Start / End Page: A394 - A400 Identifier: -