Results 211 to 220 of about 151,048 (255)
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2008
Eye design in invertebrates is diverse and gives rise to a variety of color-vision systems. The most sophisticated color vision has been found in marine crustaceans - mantis shrimps. These shrimps use for color vision 12 spectrally different photoreceptors, while many other crustaceans have only two types of spectrally selective photoreceptors ...
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Eye design in invertebrates is diverse and gives rise to a variety of color-vision systems. The most sophisticated color vision has been found in marine crustaceans - mantis shrimps. These shrimps use for color vision 12 spectrally different photoreceptors, while many other crustaceans have only two types of spectrally selective photoreceptors ...
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Scientific American, 1989
Three centuries of experimentation in optics, psychophysics and biochemistry established the dependence of color vision on three kinds of light-absorbing molecules, or pigments, in the cone cells of the retina. The author has isolated the genes that encode the pigments and has identified genetic anomalies that lead to color blindness.
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Three centuries of experimentation in optics, psychophysics and biochemistry established the dependence of color vision on three kinds of light-absorbing molecules, or pigments, in the cone cells of the retina. The author has isolated the genes that encode the pigments and has identified genetic anomalies that lead to color blindness.
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1972
Color vision deficiencies are inherently intriguing. Perhaps beyond their importance for task performance based on visual discriminations is their significance for color theory. They are, as it were, nature’s “test“ cases.
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Color vision deficiencies are inherently intriguing. Perhaps beyond their importance for task performance based on visual discriminations is their significance for color theory. They are, as it were, nature’s “test“ cases.
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Journal of the Optical Society of America, 1955
In the theory described the three variables of the Young-Helmholtz theory are replaced by I, s, and σ, the area, position, and breadth of a probability distribution. As far as color mixing is concerned, the theory is equivalent to the Young-Helmholtz theory. It leads to the result that the spectrum locus on the chromaticity diagram should be a parabola
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In the theory described the three variables of the Young-Helmholtz theory are replaced by I, s, and σ, the area, position, and breadth of a probability distribution. As far as color mixing is concerned, the theory is equivalent to the Young-Helmholtz theory. It leads to the result that the spectrum locus on the chromaticity diagram should be a parabola
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Science, 1996
In the primate retina, three types of cone photoreceptors—red, blue, and green—code the color in the visual field. R. H. Masland describes what is known about how this information is processed in retinal cells and how new results in this issue of Science change our way of thinking about color vision.
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In the primate retina, three types of cone photoreceptors—red, blue, and green—code the color in the visual field. R. H. Masland describes what is known about how this information is processed in retinal cells and how new results in this issue of Science change our way of thinking about color vision.
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Journal of Gerontology, 1986
The usual trichromatic equation for a color match is converted into an algebraic equation consisting of the sum of the contrasts determined by the intensity ratios between the matching stimuli and arbitrary fractions of the proband. The senescence of the preretinal media is shown to affect color matches monotonically, but discrimination steps are ...
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The usual trichromatic equation for a color match is converted into an algebraic equation consisting of the sum of the contrasts determined by the intensity ratios between the matching stimuli and arbitrary fractions of the proband. The senescence of the preretinal media is shown to affect color matches monotonically, but discrimination steps are ...
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Ophthalmologica, 2010
The results of pseudoisochromatic tests (TMC Ishihara, AOH-R-R) are relatively independent of age. In the Panel D-15, the NCT box 6/4 and the desaturated panel, ageing goes hand in hand with blue-yellow confusions. Fault-positive red-green confusions result from D8/2 examination. For the FM 100 Hue test and the Anomaloscope Nagel, the data found in the
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The results of pseudoisochromatic tests (TMC Ishihara, AOH-R-R) are relatively independent of age. In the Panel D-15, the NCT box 6/4 and the desaturated panel, ageing goes hand in hand with blue-yellow confusions. Fault-positive red-green confusions result from D8/2 examination. For the FM 100 Hue test and the Anomaloscope Nagel, the data found in the
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