< A demo of reversed phi motion > Rings appear to rotate clockwise constantly, induced by the change in luminance of ellipses and the surround. References: Anstis, S. M. (1970). Phi movement as a subtraction process. Vision Research, 10, 1411-1430.pic.twitter.com/fP5cANsRwt
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Here is my webpage to demonstrate these demos. http://www.psy.ritsumei.ac.jp/~akitaoka/reversephi.html …
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