Motion perception in preterm children: role of prematurity and brain damage

We tested 26 school-aged children born preterm at a gestational age below 34 weeks, 13 with and 13 without periventricular brain damage, with four different visual stimuli assessing perception of pure global motion (optic flow), with some form information (segregated translational motion) and form-d...

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Bibliographic Details
Published in:	Neuroreport Vol. 20; no. 15; pp. 1339 - 1343
Main Authors:	Guzzetta, Andrea, Tinelli, Francesca, Del Viva, Maria M, Bancale, Ada, Arrighi, Roberto, Pascale, Rosa R, Cioni, Giovanni
Format:	Journal Article
Language:	English
Published:	Hagerstown, MD Lippincott Williams & Wilkins, Inc 07-10-2009 Lippincott Williams & Wilkins
Subjects:	Adolescent Biological and medical sciences Brain Damage, Chronic - complications Brain Damage, Chronic - physiopathology Child Cohort Studies Developmental Disabilities - etiology Developmental Disabilities - physiopathology Disability Evaluation Female Headache. Facial pains. Syncopes. Epilepsia. Intracranial hypertension. Brain oedema. Cerebral palsy Humans Infant, Newborn Infant, Premature - growth & development Leukomalacia, Periventricular - complications Leukomalacia, Periventricular - physiopathology Male Medical sciences Motion Perception - physiology Nervous system (semeiology, syndromes) Neurology Neuropsychological Tests Perceptual Disorders - etiology Perceptual Disorders - physiopathology Photic Stimulation Human Premature Cerebral palsy Nervous system diseases global motion Stimulus movement preterm Cerebral disorder periventricular leukomalacia Central nervous system disease ventral stream Perception Child dorsal stream
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Summary:	We tested 26 school-aged children born preterm at a gestational age below 34 weeks, 13 with and 13 without periventricular brain damage, with four different visual stimuli assessing perception of pure global motion (optic flow), with some form information (segregated translational motion) and form-defined static stimuli. Results were compared with a group of age-matched healthy term-born controls. Preterm children with brain damage showed significantly lower sensitivities relative to full-term controls in all four tests, whereas those without brain damage were significantly worse than controls only for the pure motion stimuli. Furthermore, when form information was embedded in the stimulus, preterm children with brain lesions scored significantly worse than those without lesions. These results suggest that in preterm children dorsal stream-related functions are impaired irrespective of the presence of brain damage, whereas deficits of the ventral stream are more related to the presence of periventricular brain damage.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0959-4965 1473-558X
DOI:	10.1097/WNR.0b013e328330b6f3