PSYCH 2E03 Lecture Notes - Ishihara Test, Trichromacy, Adaptive Optics
12 Jun 2013
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Trichromatic theory of colour vision ratio of activity of three receptors each sensitive to different wavelength of light. Evidence for trichromatic theory colour pigments: amino acid substitutions in the opsin molecules slight replacements or substitutions. More pink dots is more differences closer in the spectrum there is less differences. Adaptive optics images: by using this technic we can see the distribution in the retina. Adaptive optic-images of green and red colour blind. Person with normal colour vision sees a 74 when the plate is viewed uder standardized illumination ishihara plate as perceived by a person with a form of red-green colour deficiency. Most common missing pigment is red complement colours: red and green sees in blue, yellows and greys. Chromosome for individual opsin (human) rhodopsin: chromosome 3 cyanolabe: chromosome 7 chlorolabe and erythrolabe: x chromosome. While gene for cyanolabe is on different chromosome (an autosome) Genes for erythrolabe and chlorolabe are juxtaposed on x chromosome (98% identical)
