Wednesday, March 16, 2011


This is an interesting illusion called the perception jiggle. Does the square in the center seem to be moving? It isn't, but the perception of movement is caused by the brain's attempt to interpret what it is seeing. Most of the time the brain's interpretation of sensations sent to it by the eyes is perfectly accurate, but occasionally a crack or flaw in it's visual algorithm can be detected, as here.

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