Re-assessing perceptual diagnostics for observers with diverse retinal photopigment genotypes

Jameson, Kimberly A.; Bimler, David; Wasserman, Linda

doi:10.1075/z.pics2.06jam

Cited by 15 publications

(19 citation statements)

References 29 publications

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“…Just as trichromats can make more color discriminations than dichromats, functional tetrachromats would be able perceive a greater number of color discriminations than trichromats. Studies have indeed shown that people with four cone types sometimes do see colors that neurotypical people do not see, and hence that some women are tetrachromats (Jameson et al 2001(Jameson et al , 2006.…”

Section: Variation In Color Perceptionmentioning

confidence: 96%

The Self-Locating Property Theory of Color

Brogaard

2015

Minds & Machines

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The paper reviews the empirical evidence for highly significant variation across perceivers in hue perception and argues that color physicalism cannot accommodate this variability. Two views that can accommodate the individual differences in hue perception are considered: the self-locating property theory, according to which colors are self-locating properties, and color relationalism, according to which colors are relations to perceivers and viewing conditions. It is subsequently argued that on a plausible rendition of the two views, the self-locating theory has a slight advantage over color relationalism in being truer to the phenomenology of our color experiences.

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Section: Variation In Color Perceptionmentioning

confidence: 96%

The Self-Locating Property Theory of Color

Brogaard

2015

Minds & Machines

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“…As shown in previous photopigment opsin genotyping research molecular genetics research has determined that genotypes involving more than three normal photopigment opsin variants are not uncommon, [3,4,12,13,18,25] and it is thought that mechanisms governing expression of such photopigment opsin genes does not rule out the possibility that an individual will express more than three classes of retinal photopigments. The aim of much of the research into potential human tetrachromacy has been to discover (a) how the possession of extra photopigment opsin genes may alter perceptual processing of color, and (b) what the X-chromosome linked features of the L-cone and M-cone opsin genes implies for potential human tetrachromacy and gender-linked color vision processing di↵erences.…”

Section: Participantsmentioning

confidence: 99%

“…Both sets of results for CA suggest that she possesses a potential tetrachromat genotype that when phenotypically expressed permits richer color experience compared to trichromat controls. [12,13]…”

Section: Basis Functionsmentioning

confidence: 99%

Investigating Potential Human Tetrachromacy in Individuals with Tetrachromat Genotypes Using Multispectral Techniques

Bochko¹,

Jameson²

2018

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This article uses multispectral techniques to investigate color processing in two individuals possessing photopigment genotypes allowing potential human tetrachromacy. In our investigations we measure spectral reflectances from empirically reproduced color sensations of potential tetrachromat observers, and investigate color processing basis functions underlying the observed set of tetrachromat spectra. Our investigations provide new empirical and quantitative methods for estimating trichromat individuals personalized spectral sensitivities, and, as shown in one potential tetrachromat examined, permit estimation of spectral sensitivities for cases that may not conform to the kind of standard dimensional solutions typically associated with trichromat models.

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“…"Anomalous trichromat" agents are modeled using FM100 performance as reported by Bimler and colleagues [ [31], Table 1, p. 166]. "Expert" agents are modeled using FM100 performance reported by Jameson and colleagues [32,33]. And "deficient" agents are modeled using protanope and deuteranope performances from the FM100 diagnostic database [34].…”

Section: Modeling Different Forms Of Observer Variationmentioning

confidence: 99%

“…• Expert trichromat agents: C ij = C sorting C local , where confusion parameter matrices are based on observed FM100 data [32,33]. (Details for "expert" agent modeling are presented later, in Section 3.)…”

Section: Modeling Different Forms Of Observer Variationmentioning

confidence: 99%

Evolutionary models of color categorization II Realistic observer models and population heterogeneity

Jameson

Komarova

2009

J. Opt. Soc. Am. A

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The evolution of color categorization is investigated using computer simulations of agent population categorization games. Various realistic observer types are implemented based on Farnsworth-Munsell 100 Hue Test human performance data from normal and anomalous trichromats, dichromats, and humans with four retinal photopigments. Results show that (i) a small percentage of realistically modeled deficient agents greatly affects the shared categorization solutions of the entire population in terms of color category boundary locations; (ii) for realistically modeled populations, dichromats have the strongest influence on the color categorization; their characteristic forms of color confusion affect (i.e., attract or repel) color boundary locations and accord with our findings for homogeneous dichromat populations [J. Opt. Soc. Am. A26, 1414-1423 (2009)]; (iii) adding anomalous trichromats or trichromat "experts" does not destabilize the solutions or substantially alter solution structure. The results provide insights regarding the mechanisms that may constrain universal tendencies in human color categorization systems.

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Re-assessing perceptual diagnostics for observers with diverse retinal photopigment genotypes

Cited by 15 publications

References 29 publications

The Self-Locating Property Theory of Color

The Self-Locating Property Theory of Color

Investigating Potential Human Tetrachromacy in Individuals with Tetrachromat Genotypes Using Multispectral Techniques

Evolutionary models of color categorization II Realistic observer models and population heterogeneity

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