Luminance thresholds for the Bezold-Brücke hue shift

Smith, Vivianne C.; Pokorny, Joel; Cohen, Joseph D.; Perera, Thushara

doi:10.3758/bf03212751

Perception & Psychophysics

1968

DOI: 10.3758/bf03212751

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Luminance thresholds for the Bezold-Brücke hue shift

Vivianne C. Smith

Joel Pokorny

Joseph D. Cohen

et al.

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1975

1991

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Cited by 11 publications

(1 citation statement)

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“…The hues of the two half-fields could be matched by varying the wavelength of one half of the field. According to Smith, Pokorny, Cohen, & Perera, 1968;Walraven, 1961;van der Wildt & Bouman, 1968). Bezold-Briicke hue shift functions have also been demonstrated for pigeons (Wright, 1976).…”

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confidence: 99%

Hue shift of induced colour as a function of luminance relations

Derefeldt

Holmgren

Bergström

1979

Scandinavian J Psychology

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The hue of induced colour was studied as a function of surround/test field luminance ratio using a chromatic surround and an achromatic central test field. The hue of the test field was determined by means of colour naming methods. Three inducing colours were used: blue (Wr No. 47), green (Wr No. 58), and red (Wr No. 25). The number of subjects was 9–11 in the two experiments. The luminance ratio (ranging from 0.07 to 17.1) was varied by varying the luminance of the test field (Experiment 1) or of the surround (Experiment 2). For the blue surround the results show a hue shift in accordance with the Bezold‐Brücke phenomenon. For the inducing colours green and red the induced colours are weak, and the hue shifts are more or less unsystematic though there are individual subjects showing a trend in the Bezold‐Brücke direction. It is concluded that the hue shifts depend on the luminance relations rather than on the test field luminance.

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confidence: 99%

Hue shift of induced colour as a function of luminance relations

Derefeldt

Holmgren

Bergström

1979

Scandinavian J Psychology

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Simulated bipolar cells in fovea of human retina

Siminoff

1991

Biol. Cybern.

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Effects of chromatic adaptation on C-type bipolar cells (BC) in human retinal fovea are studied. Adaptation of the r-g channel is linear for both central fovea and parafovea. Adaptation of the parafovea bl-y channel, on the other hand, is nonlinear, which is accounted for by the slower adaptation rate of blue-sensitive cones with white light intensity as compared to rates of red- and green-sensitive cones. Achromatic adaptation of red- and green-center BCs produces uniform response decreases but without unique yellow loci shifts. Achromatic adaptation of blue-center BCs, on the other hand, does cause shifts of the unique green locus. Shifts of the crossover points for the BC response spectra occur with chromatic adaptation; the unique yellow loci shifts to shorter wavelengths with adapting wavelengths shorter than 550 nm and longer wave-lengths with longer adapting wavelengths than 550 nm. Chromatic adaptation is sufficient to explain the Bezold-Brüke effects; but to fully account for these shifts a novel hypothesis is proposed. For the green and red spectrum regions Bezold-Brücke shifts are due to r-g channel chromatic adaptation, while for the blue spectrum region bl-y channel chromatic adaptation accounts for Bezold-Brücke shifts. The two channels function independently in an either/or manner. The bl-y channel, besides having a unique green locus at 517.7 nm, has a crossover point at about 670 nm. Chromatic adaptation of the bl-y channel produces shifts of the unique red locus, which may account for extraspectral hue shifts.

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Temporal independence of the Bezold-Brücke hue shift

Cohen

1975

Vision Research

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Luminance thresholds for the Bezold-Brücke hue shift

Cited by 11 publications

References 10 publications

Hue shift of induced colour as a function of luminance relations

Hue shift of induced colour as a function of luminance relations

Simulated bipolar cells in fovea of human retina

Temporal independence of the Bezold-Brücke hue shift

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