Illusory Movement of Dotted Lines

DOI Web Site 3 Citations
  • Hiroyuki Ito
  • Stuart Anstis
    Department of Psychology, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0109, USA
  • Patrick Cavanagh
    Laboratoire de Psychologie de la Perception, Université Paris Descartes, UFR Biomédicale des Saints-Pères, 45 rue des Saints-Pères, 75270 Paris, France

Abstract

<jats:p> When oblique rows of black and white dots drifted horizontally across a mid-grey surround, the perceived direction of motion was shifted to be almost parallel to the dotted lines and was often nearly orthogonal to the real motion. The reason is that the black/white contrast signals between adjacent dots along the length of the line are stronger than black/grey or white/grey contrast signals across the line, and the motion is computed as a vector sum of local contrast-weighted motion signals. </jats:p>

Journal

  • Perception

    Perception 38 (9), 1405-1409, 2009-01-01

    SAGE Publications

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