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  Contrast discrimination with pulse-trains in pink noise

Henning, G., Bird, C., & Wichmann, F. (2002). Contrast discrimination with pulse-trains in pink noise. Journal of the Optical Society of America A, 19(7), 1259-1266. doi:10.1364/JOSAA.19.001259.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-E094-A Version Permalink: http://hdl.handle.net/21.11116/0000-0005-8362-8
Genre: Journal Article

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 Creators:
Henning, GB, Author              
Bird, CM, Author
Wichmann, FA1, 2, Author              
Affiliations:
1Department Empirical Inference, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497795              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: Detection performance was measured with sinusoidal and pulse-train gratings. Although the 2.09-c/deg pulse-train, or line gratings, contained at least 8 harmonics all at equal contrast, they were no more detectable than their most detectable component. The addition of broadband pink noise designed to equalize the detectability of the components of the pulse train made the pulse train about a factor of four more detectable than any of its components. However, in contrast-discrimination experiments, with a pedestal or masking grating of the same form and phase as the signal and 15 contrast, the noise did not affect the discrimination performance of the pulse train relative to that obtained with its sinusoidal components. We discuss the implications of these observations for models of early vision in particular the implications for possible sources of internal noise.

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 Dates: 2002-07
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: BibTex Citekey: 1137
DOI: 10.1364/JOSAA.19.001259
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Title: Journal of the Optical Society of America A
Source Genre: Journal
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Publ. Info: Washington, D.C. : The Society
Pages: - Volume / Issue: 19 (7) Sequence Number: - Start / End Page: 1259 - 1266 Identifier: ISSN: 0740-3232
CoNE: https://pure.mpg.de/cone/journals/resource/954925538151_1