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Early Language Development After Peri-natal Stroke
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Abstract:
Early unilateral brain damage has different implications for language development than does similar damage in adults, given the plasticity of the developing brain. The goal of this study was to examine early markers of language and gesture at 12 and 24 months in children who had peri-natal right hemisphere (RH) or left hemisphere (LH) stroke (n = 71), compared with typically developing controls (n = 126). Parents completed the MacArthur-Bates Communicative Development Inventory (CDI): Words & Gestures (12 month data point), or the CDI: Words & Sentences (24 month data point). Statistical analyses were performed on percentile scores using analysis of variance techniques. At 12 months, there were no differences among groups for Words Understood, Phrases Understood or Words Produced. At 24 months, both lesion groups scored significantly lower than controls on Word Production, Irregular Words, and Mean Length of Sentences, but lesion groups did not differ from each other. In longitudinal subset of participants, expressive vocabulary failed to progress as expected from 12 to 24 months in the stroke group, with no differences based on lesion side. Gesture and word production were dissociated in the left hemisphere subjects. Findings suggest that early language development after peri-natal stroke takes a different course from that of typical language development, perhaps reflecting brain reorganization secondary to plasticity in the developing brain.
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Keyword:
Article
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URL: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3809324 http://www.ncbi.nlm.nih.gov/pubmed/23711573 https://doi.org/10.1016/j.bandl.2013.04.006
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