Fast positive motion aftereffect arising in the afterimage of rotating ‘Enigma’

Hiroyuki Ito; Ziwen Li; Waipieng Tong; Sheryl Anne Manaligod de Jesus

doi:10.47691/joi.v6.13666

Hiroyuki Ito Faculty of Design, Kyushu University, Fukuoka, Japan; 2Center for Applied Perceptual Science, Kyushu University, Fukuoka, Japan https://orcid.org/0000-0003-0344-5374
Ziwen Li School of Design, Politecnico di Milano, Milan, Italy
Waipieng Tong School of IT and Media Design, HAN University of Applied Sciences, Arnhem, the Netherlands
Sheryl Anne Manaligod de Jesus Faculty of Design, Kyushu University, Fukuoka, Japan; and Center for Applied Perceptual Science, Kyushu University, Fukuoka, Japan https://orcid.org/0009-0005-5259-0852

DOI: https://doi.org/10.47691/joi.v6.13666

Keywords: Enigma, motion aftereffect, afterimage, illusion, relative motion

Abstract

Enigma is an Op art piece that induces an illusory flow in rings on a radial sunburst pattern. We report that, after an Enigma pattern was slowly rotated and then removed, a fast rotation of the rings’ afterimage in the same direction as the previous rotation was perceived. The phenomenon is demonstrated with movies and experimental results.

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