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Supplementary Material for: Beta Spectral Power During Passive Listening in Preschool Children with Specific Language Impairment

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posted on 2024-05-09, 07:40 authored by Fatić S., Stanojevic N., Jeličić L., Bilibajkić R., Marisavljević M., Maksimović S., Gavrilović A., Subotića M.
Introduction. Children with Specific Language Impairment (SLI) have difficulties in different speech and language domains. Electrophysiological studies have documented that auditory processing in children with SLI is atypical and probably caused by delayed and abnormal auditory maturation. During the resting state, or different auditory tasks children with SLI show low or high beta spectral power, which could be a clinical correlate for investigating brain rhythms. Methods. The aim of this study was to examine the electrophysiological cortical activity of the beta rhythm while listening to words and nonwords in children with SLI in comparison to typical developing (TD) children. The participants were 50 children with SLI, aged 4 and 5 years old, and 50 age-matched TD children. The children were divided into two subgroups according to age: 1) children 4 years of age; 2) children 5 years of age. Results. The older group differed from the younger group in beta auditory processing, with increased values of beta spectral power in the right frontal, temporal, and parietal regions. In addition, children with SLI have higher beta spectral power than TD children in the bilateral temporal regions. Conclusion. Complex beta auditory activation in TD and SLI children indicate the presence of early changes in functional brain connectivity.


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