Multidimensional scaling reveals a color dimension unique to ‘color-deficient’ observers

  title={Multidimensional scaling reveals a color dimension unique to ‘color-deficient’ observers},
  author={Jenny M Bosten and J Robinson and Gabriele Jordan and J. D. Mollon},
  journal={Current Biology},

Figures from this paper

Simulations of adaptation and color appearance in observers with varying spectral sensitivity
The simulations highlight the role that known processes of adaptation may play in compensating color appearance for variations in sensitivity both within and across observers, and provide a novel tool for visualizing the perceptual consequences of any variation in visual sensitivity including changes associated with development or disease.
Color Vision, Cones, and Color-Coding in the Cortex
  • B. Conway
  • Biology
    The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry
  • 2009
Though nothing is known, these signals presumably interface with motor programs and emotional centers of the brain to mediate the widely acknowledged emotional salience of color.
Color perception in anomalous trichromats : Neuroimaging
The results of this study provide evidence for compensatory amplification, but suggest that the degree of compensation varies across individuals.
Orthogonal Relations and Color Constancy in Dichromatic Colorblindness
Previously published data on dichromacy are plotted and analyzed in CIELUV uniform color space to find spatial relations in terms of color appearance space, and Wavelength shifts between illuminants demonstrate chromatic adaptation correlates exactly with that in trichromatic vision.
The dimensionality of color vision in carriers of anomalous trichromacy.
It is suggested that most carriers of color anomaly do not exhibit four-dimensional color vision, and so it is believed that anomalous trichromacy is unlikely to be maintained by an advantage to the carriers in discriminating colors.
Human Color Vision and Tetrachromacy
This Element focuses on new knowledge about the linkages between color vision genetics and color perception variation and the color perception consequences of inheriting alternative, nonnormative, forms of genetic sequence variation.
Compensation for red-green contrast loss in anomalous trichromats.
The contraction along the L/(L + M) axis shown in the perceptual color spaces of anomalous trichromats is far smaller than predicted by their reduced sensitivity, suggesting that an adaptive adjustment of postreceptoral gain may magnify the cone signals of anomalies to exploit the range of available postreceptionoral neural signals.
Color vision diversity and significance in primates inferred from genetic and field studies
New World monkeys can serve as an excellent model to understand and evaluate the adaptive significance of primate trichromacy in a behavioral context and introduce the genetic and behavioral study of vision-behavior interrelationships in free-ranging sympatric capuchin and spider monkey populations in Costa Rica.


Multidimensional Scaling of Large Chromatic Differences by Normal and Color-Deficient Subjects
The following two articles offer a glimpse at current experimental psychology in the Soviet Union, normally screened from the English-speaking world by all but impenetrable language barriers. The
Color spaces of color-normal and color-abnormal observers reconstructed from response times and dissimilarity ratings
This study concluded that RTs are suitable for detecting temporal differences in color processing but, for that very same reason, rather ill-suited for reconstructing color spaces, and that the rating procedure yielded the most logical results for recovering color space.
Constructing the color space of the deuteranomalous observer
The discriminability of 66 pairs of colors was quantified by measuring the time that observers needed to judge whether the two colors in each pair were the same or different. A multidimensional
Chromaticity diagram showing cone excitation by stimuli of equal luminance.
A plane of constant luminance provides a chromaticity diagram in which excitation of each cone type is represented by a linear scale (horizontal or vertical), and in which the center-of-gravity rule applies with weights proportional to luminance.
The relative salience of the cardinal axes of colour space in normal and anomalous trichromats
By imposing rival perceptual organizations on a regular spatial array, we have measured the relative salience of colour differences along the two cardinal axes of colour space. Results are reported
Full-spectrum cone sensitivity functions for X-chromosome-linked anomalous trichromats.
The cone fundamentals for X-chromosome-linked anomalous trichromats for the wavelength range of 400-700 nm were derived and it was found that the protanomalous M- and L'-cone pigments are separated by 10 nm and the deuteranomalously M'- and L-cone piglets are separatedBy 6 nm, where M and L indicate middle- and long-wavelength sensitive, respectively.
  • C. Helm
  • Psychology
    Journal of the Optical Society of America
  • 1964
The fact that no bias was observed in the results of the triads-ratio judgments suggests that this procedure is the more appropriate technique for scaling color relations.
Position of a 'green-red' hybrid gene in the visual pigment array determines colour-vision phenotype
It is concluded that the green-red hybrid gene will only cause deutan defects when it occupies the second position of the pigment gene array.
Colour-Blindness and Camouflage
  • Mathematics
  • 1940
THE chief characteristic which distinguishes colourblind people from those with normal vision, is a reduced ability to distinguish colours that are normally quite distinct. Superficially, therefore,