Frequency, phase, and colour coding in apparent motion: 2.
In an earlier paper, Caelli and Finlay demonstrated that the perception of apparent motion was contingent on critical phase relationships between inducing sources, and their spatio-temporal frequency ranges. In their original stimulus red-green centre-surround sources were used and phase-specific inhibition was found at 60 degrees--90 degreee phase angle differences between the complementarily coloured elements. In this experiment we show that, when centre-surround sources are replaced by vertically-horizontally displaced complementary (or identically coloured) sources, symmetrical phase inhibition effects occur with both motions.
D003118:Color Perception; D004193:Discrimination Learning; D006801:Humans; D007088:Illusions; D009039:Motion Perception; D009903:Optical Illusions; D009949:Orientation; D013028:Space Perception