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Visual Motion Detection: A Computational Theory and Some of the Psychological Data which it Integrates

In the context of a computational theory of visual motion detection some apparently conflictual psychological data about human visual motion perception are shown to be perfectly compatible. The hypothesis is put forward that the human visual motion detection system is limited to considering only one visual object at a time, this visual object being however allowed to embrace any part of the observed scene, whether the chosen part consists of many physical objects, or only one, or only a small part of one.