A line-doubling illusion

  • Stuart Anstis Department of Psychology, University of California at San Diego, La Jolla, CA, USA
  • Patrick Cavanagh Centre for Vision Research, York University, Toronto, ON, Canada; Department of Psychology, Glendon College, Toronto, ON, Canada; and Department of Psychological and Brain Sciences, Dartmouth College, Hanover, NJ, USA
Keywords: illusion, peripheral vision, phase reversal, edge, texture boundary


We present a novel ‘dazzle’ illusion, in which a black/white negative bar embedded in a grating and viewed in near peripheral vision can look doubled, as if there were two bars lying side by side touching each other.


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How to Cite
Anstis S., & Cavanagh P. (2021). A line-doubling illusion. Journal of Illusion, 2. https://doi.org/10.47691/joi.v2.7540
Phenomenal reports