Naming processes in reading and spelling disorders: an electrophysiological investigation

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

doi:10.1016/j.clinph.2019.11.017

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 journal › Article › peer-review

6 Citations (Scopus)

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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 language	English
Pages (from-to)	351-360
Number of pages	10
Journal	Clinical Neurophysiology
Volume	131
Issue number	2
DOIs	https://doi.org/10.1016/j.clinph.2019.11.017
Publication status	Published - 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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Publisher version (open access)Final published version, 965 KBLicence: CC BY-NC-ND

Cite this

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title = "Naming processes in reading and spelling disorders: an electrophysiological investigation",

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.",

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author = "Sarolta Bakos and Heike Mehlhase and Karin Landerl and J{\"u}rgen Bartling and Gerd Schulte-K{\"o}rne and Kristina Moll",

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.",

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AU - Mehlhase, Heike

AU - Landerl, Karin

AU - Bartling, Jürgen

AU - Schulte-Körne, Gerd

AU - Moll, Kristina

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N2 - 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.

AB - 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.

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Naming processes in reading and spelling disorders: an electrophysiological investigation

Abstract

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