Title of article :
The variety of visual perceptual impairments in pre-school children with perinatal brain damage
Author/Authors :
Peter Stiers، نويسنده , , Bernadette M. van den Hout، نويسنده , , Monique Haers، نويسنده , , Ria Vanderkelen، نويسنده , , Linda S. de Vries، نويسنده , , Onno van Nieuwenhuizen، نويسنده , , Erik Vandenbussche، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2001
Pages :
16
From page :
333
To page :
348
Abstract :
To study the selectivity of visual perceptual impairment in children with early brain injury, eight visual perceptual tasks (L94), were administered to congenitally disabled children both with and without risk for cerebral visual impairment (CVI). The battery comprised six object-recognition and two visuoconstructive tasks. Seven tasks were newly designed. For these normative data are presented (age 2.75–6.50 years). Because the recognition tasks required object naming, each item included a canonical control drawing and visual perceptual ability was evaluated relative to the non-verbal intelligence level, instead of chronological age. In 22 multiple disabled children with no indications of CVI, the frequency of impairment did not exceed that in the reference sample for any L94 task. In contrast, in 57 5-year-old children who were at risk for CVI due to pre-maturity or birth asphyxia, a significant increase in the frequency of impairment was seen on six L94 tasks (range 12–38%). However, only five children had more than two impairments, indicating that the deficits were selective, not pervasive. We conclude that early brain lesions interfere with the functioning of particular visual subsystems, yet leave other subsystems intact and functioning within the normal range.
Keywords :
visual perception , Perinatal brain damage , Cerebral visual impairment , Visual agnosia , mental retardation
Journal title :
Brain and Development
Serial Year :
2001
Journal title :
Brain and Development
Record number :
494388
Link To Document :
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