The inset/surround appears to move.pic.twitter.com/DpgOlZszq0
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Also see: Kitaoka, A. (2016). Motion illusions in stationary images. Invited Address, 31st International Congress of Psychology (ICP2016), PACIFICO Yokohama, Japan, July 28, 2016. http://www.psy.ritsumei.ac.jp/~akitaoka/ICP2016.html …
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