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Studying Brain Function in Children Using Magnetoencephalography
Published on: April 8, 2019
Increases in language lateralization in normal children as observed using magnetoencephalography
Volker Ressel1, Marko Wilke, Karen Lidzba
1Department of Pediatric Neurology and Developmental Medicine, Children's Hospital, University of Tübingen, Hoppe-Seyler-Str. 1, Tübingen 72076, Germany. Volker.Ressel@med.uni-tuebingen.de
Brain and Language
|February 19, 2008
Summary
Brain imaging reveals that language specialization in children
Area of Science:
- Neuroscience
- Developmental Neuroscience
- Cognitive Neuroscience
Background:
- Previous functional magnetic resonance imaging (fMRI) studies suggest language hemispheric dominance increases with age.
- Magnetoencephalography (MEG) offers a sensitive method to study brain activity during development.
Purpose of the Study:
- To investigate age-related changes in hemispheric specialization for language in children using MEG.
- To confirm MEG's efficacy in detecting language lateralization in pediatric populations.
Main Methods:
- Utilized magnetoencephalography (MEG) on 22 healthy children (ages 7-16).
- Administered two language tasks: verb-generation (VG) and vowel-identification (VI).
- Analyzed oscillatory MEG spectral data to assess hemispheric differences.
Main Results:
- Confirmed significant hemispheric specialization for language in both VG and VI tasks.
- Observed a significant increase in language lateralization with increasing age for both tasks.
- This increase in lateralization was independent of task performance, suggesting a maturational effect.
Conclusions:
- Magnetoencephalography effectively detects language hemispheric specialization in developing children.
- Language lateralization increases with age during normal brain maturation.
- Findings support a developmental trajectory of increasing hemispheric specialization for language.
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