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New insights into the role of motion and form vision in neurodevelopmental disorders

Johnston, Richard; Pitchford, Nicola J.; Roach, Neil W.; Ledgeway, Timothy

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Richard Johnston

Professor of Developmental Psychology

Professor of Vision Science

Timothy Ledgeway


A selective deficit in processing the global (overall) motion, but not form, of spatially extensive objects in the visual scene is frequently associated with several neurodevelopmental disorders, including preterm birth. Existing theories that proposed to explain the origin of this visual impairment are, however, challenged by recent research. In this review, we explore alternative hypotheses for why deficits in the processing of global motion, relative to global form, might arise. We describe recent evidence that has utilised novel tasks of global motion and global form to elucidate the underlying nature of the visual deficit reported in different neurodevelopmental disorders. We also examine the role of IQ and how the sex of an individual can influence performance on these tasks, as these are factors that are associated with performance on global motion tasks, but have not been systematically controlled for in previous studies exploring visual processing in clinical populations. Finally, we suggest that a new theoretical framework is needed for visual processing in neurodevelopmental disorders and present recommendations for future research.

Journal Article Type Article
Acceptance Date Sep 27, 2017
Online Publication Date Sep 28, 2017
Publication Date Dec 31, 2017
Deposit Date Oct 9, 2017
Publicly Available Date Oct 9, 2017
Journal Neuroscience and Biobehavioral Reviews
Print ISSN 0149-7634
Electronic ISSN 1873-7528
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 83
Keywords Neurodevelopmental disorders, Vision, Motion, Form, Integration, Segmentation, Sex, IQ
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