This one too only rotates a few degrees both ways for me. Do different people's brains work differently?
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On clockwise in bright conditions while off counterclockwise in dark conditions. I guess you see both. Kitaoka, A. (2014). Color-dependent motion illusions in stationary images and their phenomenal dimorphism. Perception, 43(9), 914-925.
End of conversation
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Hm? They don't rotate at all?
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Nice gif.
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