PSYC 2390 Chapter Notes -Optical Illusion, Optical Flow, Motion Perception

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Ability to see movement: see objects changing position. One of most important attributes of vision: can be colour blind and have bad depth perception but still survive because of the ability to see motion. Attracts attention (attentional capture, seeing your friend waving in the crowd, effect occurs when you are consciously looking for something and when you are paying attention to something else: important role in survival. Motion defines object form and can aid in object perception: Group together objects that are moving together. Can use this to define form and contours. Random dot kinematograms: shift square over and see form defined by that movement. One reason that camouflage animals need to freeze in order to be hidden: as long as they are still they are protected. As soon as they start moving, grouping by common fate causes them to be distinguishable.

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