Physiology of Colour Vision

Willmer, E. N.

doi:10.1038/151632a0

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…If the blue obtained by stimulating rods at scotopic levels can mix with a cone hue, then, perhaps, purple should be seen in this situation. Willmer (1943) has suggested that other hues might also be observed as rod output is varied within the photochromatic interval, while cone output is held constant.…”

Section: Resultsmentioning

confidence: 99%

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Rod involvement in peripheral color processing

Ambler

Proctor

1976

Scandinavian J Psychology

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Abstract.— It has previously been suggested that rods act as blue receptors in peripheral color vision. Two experiments examining this issue were conducted. Experiment 1 investigated the perceived hue of a test light presented at a luminance level above chromatic threshold. At 8° in the periphery, the 500 nm test light was perceived as more blue under conditions of dark adaptation than after light adaptation. Similar differences were not found for foveal presentation. The increased blue in the periphery after dark adaptation was attributed to a rod contribution. In Experiment 2 an attempt was made to mix a rod contribution obtained with a 470 nm light below chromatic threshold, with a cone color obtained from a 670 nm light presented above chromatic threshold. No evidence was obtained to support the idea that a blue produced by rods stimulated below chromatic threshold could mix with a red produced by cones stimulated above chromatic threshold. The results are discussed in terms of a rod contribution to hue which is dependent on the luminance level of short wavelength stimulation.

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Section: Resultsmentioning

confidence: 99%

“…The effect may be indirect and due to simultaneous contrast. Willmer (1949) andB. Stabell (1967) have shown that when an achromatic short wavelength light below cone threshold is surrounded by a red light above chromatic threshold, the previously achromatic light turns blue.…”

Section: Resultsmentioning

confidence: 99%

Rod involvement in peripheral color processing

Ambler

Proctor

1976

Scandinavian J Psychology

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show abstract

“…Willmer (1943), from the employment of small coloured test objects, some of which were green, pale bluegreen, yellow, pale mauve, etc., arrived at the same conclusion as K6nig had done. Willmer accepted Roar's suggestion (1930) that the rods are norreally the receptors for blue vision, and therefore their absence from the fovea may cause it to be blue-blind.…”

Section: The Alterations In Vision Brought About Bg a Reduction Of VImentioning

confidence: 99%