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Title: The effects of age on the spatial and temporal integration of global motion.
Authors: Arena, A
Hutchinson, CV
Shimozaki, SS
First Published: 26-Feb-2012
Citation: VISION RES, 2012, 58C, pp. 27-32
Abstract: The purpose of this study was to determine the relative contributions of local element speed and/or spatial displacement to age-related deficits in global motion processing. Motion coherence thresholds (79% correct) were measured for discriminating the direction of translational random dot kinematograms (RDKs) as a function of dot speed and spatial displacement across the adult lifespan (20-79years). Age-related impairments in global motion processing were only apparent in observers 70-79years of age. In agreement with previous studies, we found an age-related impairment at low (0.625deg/s) and high speeds (10deg/s). However, these effects were heavily mediated by dot spatial displacement. Motion coherence thresholds were also most markedly elevated in women aged over 70years. These findings suggest a prominent role of spatial integration in global motion processing. Moreover, global motion perception appears to be relatively well preserved until around 70years of age.
DOI Link: 10.1016/j.visres.2012.02.004
eISSN: 1878-5646
Type: Journal Article
Appears in Collections:Published Articles, School of Psychology

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