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1 results

  • A new technique for estimating chromatic isoluminance in humans and monkeys

  • Avi Chaudhuri, Thomas D. Albright
  • Journal:
    Visual Neuroscience / Volume 5 / Issue 6 / December 1990
    Published online by Cambridge University Press:
    02 June 2009, pp. 605-608

  • Current approaches to the problem of equating different colors for luminance (chromatic isoluminance) rely upon human reports of perceptual events that are reduced at some luminance ratio. In this report, a technique is described that evokes a vivid percept of motion of a textured pattern only at isoluminance. Furthermore, in both humans and monkeys, the moving stimulus produces a striking optokinetic response in the same direction as the perceived motion. If used in this manner, the technique can provide an estimate of chromatic isoluminance in a variety of species and be used to corroborate a human subjects's perceptual judgement.