Retinal image smear as a source of information about magnitude of eye movement

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Abstract

Four experiments with a total of 14 adults were conducted to determine the extent to which retinal image smearing during saccades provides information about the eye movement magnitude to the perceptual system. The technique involved obtaining measures of perceived movement when the total visual field was displaced in conjunction with saccadic eye movements. Trials with normal retinal smear were compared with trials on which smearing was greatly reduced or eliminated. Results show that the absence of normal retinal smear during a saccade increased the uncertainty in the information available to the perceptual system and that this uncertainty resulted in a tendency to perceive smaller than veridical amounts of movement. (14 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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