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Motion Perception

The detection and recognition of motion is one of the key functions of vision. This is not a statement only about human vision: In every species where evidence for visual motion processing has been sought, it has been found, from mammals such as monkeys, cats, and rabbits, through amphibians, crustaceans, and insects. Bees and flies, for instance, have been shown to have exquisitely engineered motion processing systems for flight control and for identifying the structure of their surroundings. This entry will discuss the functions of visual motion processing, motion perception as a distinct submo-dality, elementary motion detectors, sampled motion, eye-head motion, encoding speed and direction, global motion, segmentation and transparency, and integration of direction and the aperture problem.

Functions of Visual Motion Processing

Movement within the retinal ...

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