What is the hue of rod vision?

Buck, Steven L.

doi:10.1002/1520-6378(2001)26:1+<::aid-col13>3.0.co;2-j

Cited by 25 publications

(24 citation statements)

References 13 publications

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“…There was no clear evidence of the rod red bias most often found for extrafoveal blue test stimuli on black surrounds [14,15,17]. We have previously suggested that the rod red bias for blue stimuli is mediated by rod signals acting through S-cone pathways [14,25] and have shown that it is disadvantaged by short test-stimulus duration (≤50 ms), revealing a rod green bias that is presumably mediated by L-and M-cone pathways [26][27][28].…”

Section: Discussionmentioning

confidence: 99%

Dark versus bright equilibrium hues: rod and cone biases

Buck

DeLawyer

2014

J. Opt. Soc. Am. A

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Equilibrium (unique) red, green, blue, and yellow stimuli look bright in a black surround, but they look dark in a bright white surround, and yellow changes to brown. We investigated differences in equilibrium-hue chromaticity between bright and dark hues to reveal changes in weighting of cone and rod signals. The largest, most consistent shifts were found between yellow and brown, with equilibrium-brown chromaticity shifted toward red compared to equilibrium yellow at both photopic and mesopic levels. Also, at mesopic levels, rod influence reversed for most observers from a green bias for yellow to a red bias for brown. Bright/dark differences for blue, green, and red were much smaller and/or less consistent. Thus, shifts of cone and rod hue biases between bright and dark hues are most prominent in L-M-cone pathways, especially those activated by yellow and brown stimuli.

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Section: Discussionmentioning

confidence: 99%

Dark versus bright equilibrium hues: rod and cone biases

Buck

DeLawyer

2014

J. Opt. Soc. Am. A

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“…The large variety of rod effects on hue reported in the literature may result from stimulus arrangements that produce different combinations of rod influence on hue. 17 Buck 17 has suggested that midget and small-bistratified ganglion-cell pathways are a plausible retinal substrate for the "faster" and "slower" rod influence on hue naming. By this scheme, the rod influence on midget pathways has the effect of a net enhancement of M-cone signals relative to L-cone signals, which by conventional color models 18,19 ultimately results in an enhancement of green relative to red hue balance.…”

Section: Discussionmentioning

confidence: 99%

Rod influences on hue perception: Effect of background light level

Knight¹,

Buck²

2000

Color Res. Appl.

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Rod signals interact with red-green and blueyellow perceptual hue dimensions to influence color appearance across the spectrum. Hue-naming studies from our lab have identified at least two rod-mediated mechanisms with different spectral and temporal properties: (1) a "faster" rod influence enhances green relative to red; and (2) a "slower" rod influence enhances short-wavelength red and blue. These two types of rod influence are revealed by a probe-flash paradigm . In the present study, we examine the effects of background light level on "faster" and "slower" rod mechanisms. We find both rod influences at higher light levels, but only the "faster" influence at lower light levels. These data provide additional support for the existence of two types of rod influence on hue that differ from each other in spectral specificity, temporal properties, and light-level dependence.

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“…1,6,7 Studies of the spectral distribution and time course of these effects suggest separable rod influences on hue are mediated by S-cone (tritan) and L-M (Rayleigh) pathways. 8 Rods can also influence chromatic discrimination at mesopic light levels. In trichromatic observers, rod activity has been shown to impair both constant-luminance Rayleigh discrimination thresholds 9 and S-cone mediated discrimination on the Farnsworth-Munsell 100-Hue Test.…”

Section: Introductionmentioning

confidence: 99%

Stimulus size affects rod influence on tritan chromatic discrimination

Knight¹,

Buck²,

Pereverzeva³

2000

Color Res. Appl.

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A signal-detection procedure was used to measure the influence of rods on S-cone-mediated ("tritan") chromatic discrimination in normal trichromatic human observers. Rod influence on discriminability of both increments and decrements in S-cone excitation was assessed by comparing cone-plateau (minimizes rod influence) and dark adapted (maximizes rod influence) conditions. For 1°stim-uli, rods impaired tritan discrimination, especially for Scone decrements. For 8°stimuli, rods had no systematic effects. This confirms that rods have the same direction of effect (impairment) on tritan discrimination as has been shown for Rayleigh (L-M) discrimination. However, the size dependence of the rod effect on tritan discrimination is opposite to that previously shown for either Rayleigh discrimination or hue appearance. This provides further evidence for separable rod influences on S-cone and L-M cone pathways.

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What is the hue of rod vision?

Cited by 25 publications

References 13 publications

Dark versus bright equilibrium hues: rod and cone biases

Dark versus bright equilibrium hues: rod and cone biases

Rod influences on hue perception: Effect of background light level

Stimulus size affects rod influence on tritan chromatic discrimination

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