Naming processes in reading and spelling disorders: an electrophysiological investigation

Sarolta Bakos*, Heike Mehlhase, Karin Landerl, Jürgen Bartling, Gerd Schulte-Körne, Kristina Moll

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Objective: Reading fluency deficits characteristic for reading disorders (RD; F81.0) have been shown to be strongly associated with slow naming speed (e.g. in rapid automatized naming tasks). In contrast, children with an isolated spelling disorder in the context of unimpaired reading skills (iSD; F81.1) show naming speed task performances that are similar to typically developing (TD) children. However, the exact nature of the naming speed deficit and its relation to RD and the question whether children with iSD are also on the neurophysiological level similar to TD children is still unresolved.

    Methods: The time-course and scalp topography of event-related potentials (ERP) activity recorded during a delayed digit-naming task was investigated in ten-year-old children with RD and iSD compared to a TD group.

    Results: ERP activity differed between the RD and the TD group at around 300 ms after stimulus presentation (left occipito-temporal P2). In contrast, there were no neurophysiological differences between the TD and the iSD group. The P2 component correlated with behavioural performance on the RAN task.

    Conclusions: Slow naming speed in RD might result from a slowed-down access and prolonged processing of the word (lexical) form.

    Significance: The study establishes a relation between neurophysiological processes of naming tasks and RD.

    Original languageEnglish
    Pages (from-to)351-360
    Number of pages10
    JournalClinical Neurophysiology
    Volume131
    Issue number2
    DOIs
    Publication statusPublished - Feb 2020

    Bibliographical note

    Copyright the Publisher 2019. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

    Keywords

    • Dyslexia
    • Reading disorder
    • Spelling disorder
    • Naming
    • RAN
    • ERP

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