title: Local and global aspects of biological motion perception in children born at very low birth weight.
abstract: Biological motion perception can be assessed using a variety of tasks. In the present study, 8- to 11-year-old children born prematurely at very low birth weight (<1500 g) and matched, full-term controls completed tasks that required the extraction of local motion cues, the ability to perceptually group these cues to extract information about body structure, and the ability to carry out higher order processes required for action recognition and person identification. Preterm children exhibited difficulties in all 4 aspects of biological motion perception. However, intercorrelations between test scores were weak in both full-term and preterm children--a finding that supports the view that these processes are relatively independent. Preterm children also displayed more autistic-like traits than full-term peers. In preterm (but not full-term) children, these traits were negatively correlated with performance in the task requiring structure-from-motion processing, r(30) = -.36, p < .05), but positively correlated with the ability to extract identity, r(30) = .45, p < .05). These findings extend previous reports of vulnerability in systems involved in processing dynamic cues in preterm children and suggest that a core deficit in social perception/cognition may contribute to the development of the social and behavioral difficulties even in members of this population who are functioning within the normal range intellectually. The results could inform the development of screening, diagnostic, and intervention tools.
authors.affiliation: a Department of Psychology , University of Manitoba , Winnipeg MB , Canada.
authors.forename: K E
authors.initials: KE
authors.lastname: Williamson
authors.forename: L S
authors.initials: LS
authors.lastname: Jakobson
authors.forename: D R
authors.initials: DR
authors.lastname: Saunders
authors.forename: N F
authors.initials: NF
authors.lastname: Troje
mesh_terms: D000293:Adolescent; D001321:Autistic Disorder; D016022:Case-Control Studies; D002648:Child; D003071:Cognition; D003463:Cues; D005260:Female; D005556:Form Perception; D006801:Humans; D007231:Infant, Newborn; D019102:Infant, Very Low Birth Weight; D008297:Male; D009039:Motion Perception; D012016:Reference Values; D012919:Social Behavior; D012938:Social Perception
keywords: Autism spectrum disorder; Biological motion; Prematurity; Social perception; Very low birth weight; Vision
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