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Infants from 1 month show a preference for moving over stationary stimuli (Volkmann and Dobson, J Exp Child Psychol 1976;22:86-99), but this does not demonstrate that they register motion as distinct from temporal change. We review behavioral and visual evoked potential results, which indicate that cortical processing of directional motion emerges around 7 weeks of age, with global motion processing emerging rapidly afterward. Motion and temporal properties seem to be sensitive indicators of neurodevelopmental disorders. Before motion processing develops, the infant's visual system is sensitive to the presence of rapid temporal change, but retinal and cortical processes are relatively poor at responding to temporally modulated spatial patterns. These results are discussed in terms of temporal imprecision in information transmission in the immature visual pathway and its impact on the development of infants' capabilities for analyzing visual motion.

Original publication

DOI

10.1097/OPX.0b013e3181a76e84

Type

Journal article

Journal

Optom Vis Sci

Publication Date

06/2009

Volume

86

Pages

577 - 582

Keywords

Animals, Evoked Potentials, Visual, Humans, Infant, Infant Behavior, Motion Perception, Retina, Space Perception, Time Perception, Visual Cortex