Ramachandran and Anstis (1990) found that an equiluminous kinetic edge, i.e. a virtual edge defined by unidirectional translating dots in one side and static random dot texture with equal average luminance on the other side, was perceptually displaced along the direction of movement of the dots. Thus, in the following demonstration, you will perceive that the lower edge (defined by the centripetal pattern) seems more close to the central fixation compared with the upper edge (defined by the centrifugal pattern), although these two edges are literally in the same horizontal position. Pay attention: you must keep staring at the red fixation point in this and following demonstrations.