The Bezold-Brucke Phenomenon and Contours for Constant Hue

Purdy, D. M.

doi:10.2307/1416302

Cited by 70 publications

(22 citation statements)

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“…This hypothesis is consistent with the well-documented 20-nm range 48,50,[62][63][64][65][66] in the choice of unique yellow among color normals. In this section we report the results of testing the predictions of a mixed surround model for red-green opponent receptive fields, the model favored by the results of experiment 3, against measurements of unique yellow and the L-to-M cone relative numerosity for eleven observers (the four observers of this study and seven others 16 investigated in our laboratory).…”

Section: Model Of Red-green Opponency and Color Appearancesupporting

confidence: 91%

“…Can the 20-nm range in unique yellow recorded in the literature 48,50,[62][63][64][65][66] be explained on the basis of variations among individuals in the L or M cone pigments? Even sizable shifts in the L cone pigment max produce little change in the predicted value of unique yellow because over this range of wavelengths the L pigment spectral sensitivity is relatively flat.…”

Section: B Individual Variability In Cone Spectral Sensitivities Andmentioning

confidence: 99%

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L and M cone relative numerosity and red–green opponency from fovea to midperiphery in the human retina

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Cicerone

2000

J. Opt. Soc. Am. A

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The relative numerosity of the long-wavelength-sensitive (L) and middle-wavelength-sensitive (M) cones and the red-green color appearance, as assessed by means of unique yellow, are stable from fovea to midperiphery (Ϯ28 deg nasotemporal). As foveal tests decrease in size, unique yellow progressively shifts toward longer wavelengths, favoring a model of red-green opponency carried by cells whose centers receive input from either L or M cones and whose surrounds receive mixed contributions from both. Individual differences in unique yellow over a 20-nm range and the relative numerosity of L and M cones can be linked by means of this model, suggesting that the relative number of L and M cones is a factor that regulates individual variations in redgreen color appearance.

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Section: Model Of Red-green Opponency and Color Appearancesupporting

confidence: 91%

Section: B Individual Variability In Cone Spectral Sensitivities Andmentioning

confidence: 99%

L and M cone relative numerosity and red–green opponency from fovea to midperiphery in the human retina

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Cicerone

2000

J. Opt. Soc. Am. A

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“…Luminance differences are another possibility, but studies of the BezoldBrücke hue shift have produced mixed results. Some show a relatively large effect near the locus of unique green (510-550nm) compared to the loci of unique blue (475-480nm) and unique yellow (571-578 nm) [37][38][39][40][41], but others show comparable small shifts for the three colors [42][43][44].…”

Section: Discussionmentioning

confidence: 98%

No difference in variability of unique hue selections and binary hue selections

Bosten

Lawrance-Owen

2014

J. Opt. Soc. Am. A

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No difference in variability of unique hue selections and binary hue selections Copyright and reuse:Sussex Research Online is a digital repository of the research output of the University.Copyright and all moral rights to the version of the paper presented here belong to the individual author(s) and/or other copyright owners. To the extent reasonable and practicable, the material made available in SRO has been checked for eligibility before being made available.Copies of full text items generally can be reproduced, displayed or performed and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way. If unique hues have special status in phenomenological experience as perceptually pure, it seems reasonable to assume that they are represented more precisely by the visual system than are other colors. Following the method of Malkoc et al, ( , JOSA A, 22, 2154 we gathered unique and binary hue selections from 50 subjects. For these subjects we repeated the measurements in two separate sessions, allowing us to measure test-retest reliabilities (0.52 ≤ ρ ≤ 0.78; p ≪ 0.01). We quantified the within individual variability for selections of each hue. Adjusting for the differences in variability intrinsic to different regions of chromaticity space, we compared the within individual variability for unique hues to that for binary hues. Surprisingly, we found that selections of unique hues did not show consistently lower variability than selections of binary hues. We repeated hue measurements in a single session for an independent sample of 58 subjects, using a different relative scaling of the cardinal axes of MacLeod-Boynton chromaticity space. Again, we found no consistent difference in adjusted within individual variability for selections of unique and binary hues. Our finding does not depend on the particular scaling chosen for the Y-axis of MacLeod-Boynton chromaticity space.

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“…Unfortunately there was not enough energy to obtain thresholds for wavelengths below 470 nm, Predicted luminance thresholds were calculated based on Purdy's (1937) constant hue contours and wavelength discrimination data obtained with a 3 0 bipartite field at 1.20 log troland (Pokorny & Smith, 1967). It is assumed that wavelength discrimination for targets greater than 1 0 is not grossly affected by luminance level in the range :t.00 to 3.00 log trolands (Bedford & Wysecki, 1958;McCree, 1960).…”

Section: Resul Ts and Discussionmentioning

confidence: 99%