Language and communication functioning in children and adolescents with agenesis of the corpus callosum

Date: August 2024
Authors: Charlene Moser, Megan M. Spencer-Smith, Peter J. Anderson, Alissandra McIlroy, Amanda G. Wood, Richard J. Leventer, Vicki A. Anderson, Vanessa Siffredi

Abstract:

Objective:

The corpus callosum, the largest white matter inter-hemispheric pathway, is involved in language and communication. In a cohort of 15 children and adolescents (8-15 years) with developmental absence of the corpus callosum (AgCC), this study aimed to describe language and everyday communication functioning, and explored the role of anatomical factors, social risk, and non-verbal IQ in these outcomes.

Methods:

Standardised measures of language and everyday communication functioning, intellectual ability and social risk were used. AgCC classification and anterior commissure volume, a potential alternative pathway, were extracted from T1-weighted images.

Results:

Participants with AgCC showed reduced receptive and expressive language compared with test norms, and high rates of language and communication impairments. Complete AgCC, higher social risk and lower non-verbal IQ were associated with communication difficulties. Anterior commissure volume was not associated with language and communication.

Conclusion:

Recognising heterogeneity in language and communication functioning enhances our understanding and suggests specific focuses for potential interventions.

Keywords:

Agenesis of the corpus callosum; Children and adolescents; Corpus callosum; Developmental neuropsychology; Language and communication.