Neuroanatomical Correlates of Developmental Language Disorders
Summary
Developmental language disorders encompass a spectrum of neurodevelopmental conditions marked by persistent difficulties in acquiring and using spoken or written language, despite normal hearing and the absence of frank neurological damage. Neuroanatomical investigations have revealed that these disorders are underpinned by both cortical and subcortical substrates. Structural MRI studies highlight alterations in grey matter volume and cortical surface area, particularly in perisylvian regions such as the inferior frontal gyrus, posterior temporal cortex and superior temporal sulcus. Microstructural analyses using diffusion-weighted and quantitative MRI point to atypical white matter organisation in frontostriatal and cerebellar pathways, implicating disruptions in corticostriatal loops and olivocerebellar circuits. Together, these findings suggest that developmental language disorders arise from a constellation of regional growth abnormalities, atypical myelination and altered connectivity, which collectively compromise the efficiency of neural networks supporting phonological processing, syntactic integration and speech motor control.
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Neuroanatomical Correlates of Developmental Language Disorders publication trend
The graph below shows the total number of articles in neuroanatomical correlates of developmental language disorders across all publications each year (not limited to Nature Index journals).
Technical terms
Developmental Language Disorder (DLD): A condition characterised by persistent difficulties in learning and using language in the absence of sensory or neurological deficits.
Fractional Anisotropy (FA): A diffusion MRI metric reflecting the directional coherence of water diffusion in white matter tracts, indicative of fibre integrity.
Axial Diffusivity: A diffusion measure of water movement parallel to axonal fibres, sensitive to axonal structural integrity.
Cortical Surface Area: The total area of the cerebral cortex, distinct from thickness, reflecting patterns of cortical expansion and folding during development.
Inferior Frontal Gyrus: A frontal lobe region critically involved in speech production, syntactic processing and phonological working memory.
References
- Differences in Cortical Surface Area in Developmental Language Disorder. Neurobiology of Language (2024).
- Quantitative MRI reveals differences in striatal myelin in children with DLD. eLife (2022).
- Microstructural Properties of the Cerebellar Peduncles in Children With Developmental Language Disorder. Neurobiology of Language (2024).
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