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Procedural and declarative memory brain systems in developmental language disorder (DLD)
Joanna C Lee1, Peggy C Nopoulos2, J Bruce Tomblin1
1Department of Communication Sciences and Disorders, University of Iowa, Iowa City, IA 52242, United States.
Brain and Language
|April 3, 2020
Summary
Adolescents and young adults with Developmental Language Disorder (DLD) show different white matter development in key brain systems. These findings emphasize age-related brain changes in DLD and memory.
Area of Science:
- Neuroscience
- Developmental Psychology
- Linguistics
Background:
- Developmental Language Disorder (DLD) affects language skills in children and adults.
- Understanding the neural underpinnings of DLD is crucial for effective interventions.
- White matter integrity is essential for cognitive functions, including memory.
Purpose of the Study:
- To investigate microstructural white matter differences in procedural and declarative memory systems.
- To compare these differences between adolescents/young adults with and without DLD.
- To explore age-related changes in white matter relevant to memory in DLD.
Main Methods:
- Diffusion Tensor Imaging (DTI) was employed to assess white matter microstructure.
- Participants included adolescents and young adults with and without DLD.
- Analysis focused on specific brain systems: corticostriatal, corticocerebellar, and medial temporal regions.
Main Results:
- Individuals with DLD exhibited atypical age-related changes in white matter.
- These differences were observed in the corticostriatal and corticocerebellar systems.
- Atypical development was also noted in the medial temporal region, crucial for memory.
Conclusions:
- Age is a significant factor in the study of DLD and its associated neural differences.
- White matter alterations in DLD impact memory-related brain networks.
- Further research is needed to understand the developmental trajectory of memory and language in DLD.
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