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Brain responses to lexical-semantic priming in children at risk for dyslexia.

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Author

  • Janne von Koss Torkildsen
  • Gro Syversen
  • Hanne Gram Simonsen
  • Inger Moen
  • L Smith
  • Magnus Lindgren

Summary, in English

Deviances in early event-related potential (ERP) components reXecting auditory and phonological processing are well-documented in children at familial risk for dyslexia. However, little is known about brain responses which index processing in other linguistic domains such as lexicon, semantics and syntax in this group. The present study investigated eVects of lexical-semantic priming in 20- and 24- month-olds at-risk for dyslexia and typically developing controls in two ERP experiments. In both experiments an early component assumed to reXect facilitated lexical processing for primed words was enhanced in the at-risk group compared to the control group. Moreover, an N400-like response which was prominent in the control group was attenuated or absent in at-risk children. Results suggest that deficiencies in young children at-risk for dyslexia are not restricted to perceptual and lower-level phonological abilities, but also affect higher order linguistic skills such as lexical and semantic processing.

Publishing year

2007

Language

English

Pages

243-261

Publication/Series

Brain and Language

Volume

102

Issue

3

Document type

Journal article

Publisher

Elsevier

Topic

  • Psychology

Keywords

  • N400
  • lexical-semantic processing
  • event-related potentials (ERP)
  • familial risk for dyslexia

Status

Published

ISBN/ISSN/Other

  • ISSN: 1090-2155