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Factors affecting cognitive functioning of hemiplegic children.

S C Levine, P Huttenlocher, M T Banich

    Developmental Medicine and Child Neurology
    |February 1, 1987
    PubMed
    Summary

    Intellectual functioning (IQ) was lower in children with hemiplegia, correlating with lesion size and severity. Congenital lesions impacted verbal skills less than acquired ones.

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    Area of Science:

    • Neuroscience
    • Developmental Psychology
    • Pediatric Neurology

    Background:

    • Congenital or early acquired hemiplegia can impact cognitive development in children.
    • Understanding the relationship between brain lesion characteristics and cognitive outcomes is crucial for targeted interventions.

    Purpose of the Study:

    • To investigate the relationship between lesion characteristics (size, location, type) and cognitive deficits in children with hemiplegia.
    • To compare cognitive performance between children with congenital versus acquired hemiplegic lesions.

    Main Methods:

    • Psychological testing, electroencephalograms (EEGs), and CT scans were analyzed for 41 children with hemiplegia.
    • Cognitive functions including IQ, verbal abilities (Peabody Picture Vocabulary Test), and spatial skills were assessed.
    • Lesion laterality, size, degree of hemiparesis, and EEG abnormalities were correlated with cognitive outcomes.

    Main Results:

    • Average IQ was depressed and correlated with lesion size, hemiparesis severity, and EEG abnormalities, but not lesion location.
    • Left-hemisphere damage specifically impaired receptive vocabulary.
    • Children with congenital lesions outperformed those with acquired lesions on verbal tasks, but not spatial tasks.

    Conclusions:

    • Cognitive deficits in pediatric hemiplegia are influenced by lesion severity and type.
    • The timing of the lesion (congenital vs. acquired) affects verbal development outcomes.
    • Early intervention strategies should consider the nature and timing of the brain lesion.

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