Coherence, cardinal directions and higher-order mechanisms

  title={Coherence, cardinal directions and higher-order mechanisms},
  author={John Krauskopf and Hai-Jung Wu and Bart Farell},
  journal={Vision Research},
Our initial purpose was to develop a quantitative method of estimating the cardinal directions of color space. The method is based on the finding that patterns consisting of pairs of drifting gratings modulated along different cardinal axes appear to slip with respect to one another, while the same patterns appear as a single coherent plaid if the modulation directions of the patterns are rotated by 45 deg in color space [Krauskopf & Farell (1990). Nature, 348,328-331]. A forced-choice… CONTINUE READING


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