Abstract
There is strong experimental evidence that colour discrimination depends upon signals originating at colour boundaries. Controlled movements were imposed on a boundary between an illuminated coloured area and a dark area in a previously stabilized image. Red, yellow, green and blue fields were used. Step-movements of amplitude M min arc and pulse-movements of amplitude M min arc and pulse width tau s were studied. The movement M50 to produce 50% positive responses for perception of hue was measured as a function of retinal illuminance, boundary length and speed for step-movements and pulse-width (tau) for pulse movements. Signal/photon-noise ratios were calculated.
Published Version
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