What the brain sees after the eye stops looking
Tuesday, November 8, 2011 - 21:30
in Biology & Nature
When we gaze at a shape and then the shape disappears, a strange thing happens: We see an afterimage in the complementary color. Now a Japanese study has observed for the first time an equally strange illusion: The afterimage appears in a "complementary" shape -- circles as hexagons, and vice-versa.