Sinusoid = light bar + dark bar?

Sinusoid = light bar + dark bar?

No === A sinusoidal grating can be viewed as a series of light and dark bars. Here we measure the contrast discrimination thresholds for light and dark bars individually, and find that the contrast discrimination thresholds for the whole sinusoid can be explained as ideal summation of the light and...

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Bibliographic Details
Main Authors: McIlhagga, William H., Peterson, R.
Language:en
Published: 2009
Subjects:
Light adaptation
Contrast discrimination
Noise
Threshold
Mode
Online Access:http://hdl.handle.net/10454/3613
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spelling ndltd-BRADFORD-oai-bradscholars.brad.ac.uk-10454-36132019-08-31T03:02:22Z Sinusoid = light bar + dark bar? McIlhagga, William H. Peterson, R. Light adaptation Contrast discrimination Noise Threshold Mode No A sinusoidal grating can be viewed as a series of light and dark bars. Here we measure the contrast discrimination thresholds for light and dark bars individually, and find that the contrast discrimination thresholds for the whole sinusoid can be explained as ideal summation of the light and dark bar thresholds. We propose a model for light bar, dark bar, and sinusoidal contrast discrimination which involves local light adaptation and multiplicative noise. The model accounts for the data very well, and also accounts for contrast discrimination of light and dark edges. 2009-10-06T07:58:49Z 2009-10-06T07:58:49Z 2006 Article No full-text available in the repository McIllhagga, W.H. and Peterson, R. (2006). Sinusoid = light bar + dark bar? Vision Research. Vol. 46, No. 12, pp. 1934-1945. http://hdl.handle.net/10454/3613 en http://dx.doi.org/10.1016/j.visres.2005.12.004
collection NDLTD
language en
sources NDLTD
topic Light adaptation
Contrast discrimination
Noise
Threshold
Mode
spellingShingle Light adaptation
Contrast discrimination
Noise
Threshold
Mode
McIlhagga, William H.
Peterson, R.
Sinusoid = light bar + dark bar?
description No === A sinusoidal grating can be viewed as a series of light and dark bars. Here we measure the contrast discrimination thresholds for light and dark bars individually, and find that the contrast discrimination thresholds for the whole sinusoid can be explained as ideal summation of the light and dark bar thresholds. We propose a model for light bar, dark bar, and sinusoidal contrast discrimination which involves local light adaptation and multiplicative noise. The model accounts for the data very well, and also accounts for contrast discrimination of light and dark edges.
author McIlhagga, William H.
Peterson, R.
author_facet McIlhagga, William H.
Peterson, R.
author_sort McIlhagga, William H.
title Sinusoid = light bar + dark bar?
title_short Sinusoid = light bar + dark bar?
title_full Sinusoid = light bar + dark bar?
title_fullStr Sinusoid = light bar + dark bar?
title_full_unstemmed Sinusoid = light bar + dark bar?
title_sort sinusoid = light bar + dark bar?
publishDate 2009
url http://hdl.handle.net/10454/3613
work_keys_str_mv AT mcilhaggawilliamh sinusoidlightbardarkbar
AT petersonr sinusoidlightbardarkbar
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