An illusory transformation of optic flow fields

  title={An illusory transformation of optic flow fields},
  author={Charles Duffy and Robert Wurtz},
  journal={Vision Research},
We compared a human observer's ability to locate the focus of expansion (FOE) of a radial optic flow field when this flow field was either combined with, or overlapped by, planar motion. With combined stimuli, in which the FOE was displaced in the direction opposite to the planar motion, subjects accurately located the displaced FOE. With overlapping (transparent) stimuli and the FOE remaining in the center of the display, we found an illusory transformation of the radial pattern: the focus of… CONTINUE READING

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