| 11. | This species has been tested for colour vision using choice experiments that control for brightness.
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| 12. | Normal human trichromats require a mixture of three primary colours for every day colour vision.
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| 13. | Most notable of these are her involvement with his colour vision and viscosity of gases experiments.
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| 14. | Colour Vision was sired by Frankfurter Stutenpreis as a three-year-old in 2004.
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| 15. | Nearly all daylight fish have colour vision at least as good as a normal human's.
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| 16. | Unlike many other carnivores they have colour vision, perhaps to help them distinguish ripe nuts and fruits.
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| 17. | Colour vision is perceived mainly by the macula, which is the central vision portion of the retina.
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| 18. | Rows 1 4 of the midband are specialised for colour vision, from ultra-violet to longer wavelengths.
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| 19. | These results validated the existence of the V4-complex in humans as an area specialized for colour vision.
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| 20. | However, they now find that nocturnal geckos definitely have colour vision at night, as do certain moths.
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