Journal article

Neural bases of childhood speech disorders: Lateralization and plasticity for speech functions during development

Frederique J Liegeois, Angela T Morgan

NEUROSCIENCE AND BIOBEHAVIORAL REVIEWS | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2012

Abstract

Current models of speech production in adults emphasize the crucial role played by the left perisylvian cortex, primary and pre-motor cortices, the basal ganglia, and the cerebellum for normal speech production. Whether similar brain-behaviour relationships and leftward cortical dominance are found in childhood remains unclear. Here we reviewed recent evidence linking motor speech disorders (apraxia of speech and dysarthria) and brain abnormalities in children and adolescents with developmental, progressive, or childhood-acquired conditions. We found no evidence that unilateral damage can result in apraxia of speech, or that left hemisphere lesions are more likely to result in dysarthria tha..

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Grants

Awarded by NHMRC


Funding Acknowledgements

We thank Cristina Mei for her assistance in retrieving and archiving abstracts and articles. We also thank Dr. Baldeweg and Dr. Vogel for their helpful comments on an earlier version of the manuscript, and Dr. Schulze for her assistance with illustrations. Dr. Morgan is supported by NHMRC Career Development Award 607315.