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  • Title: Apparent motion occurs only between similar spatial frequencies.
    Author: Watson AB.
    Journal: Vision Res; 1986; 26(10):1727-30. PubMed ID: 3617513.
    Abstract:
    Whether apparent motion occurs only between targets of similar spatial frequency was examined. A "crossed phi" method was used, in which two potentially different targets exchange position. If the targets differ in a feature that controls apparent motion then they will appear to move so as to exchange positions; if they differ in an irrelevant feature, no apparent exchange will occur. It was found that apparent motion occurs only between similar spatial frequencies. This result is interpreted in the light of recent models of human visual motion sensing, in which motion estimates are computed separately within a number of spatial frequency bands.
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