Impaired sensitivity to dynamic stimuli in poor readers of a regular orthography

Joel B. Talcott*, Aashild Gram, Mieke Van Ingelghem, Caroline Witton, John F. Stein, Finn E. Toennessen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The mappings from grapheme to phoneme are much less consistent in English than they are for most other languages. Therefore, the differences found between English-speaking dyslexics and controls on sensory measures of temporal processing might be related more to the irregularities of English orthography than to a general deficit affecting reading ability in all languages. However, here we show that poor readers of Norwegian, a language with a relatively regular orthography, are less sensitive than controls to dynamic visual and auditory stimuli. Consistent with results from previous studies of English-readers, detection thresholds for visual motion and auditory frequency modulation (FM) were significantly higher in 19 poor readers of Norwegian compared to 22 control readers of the same age. Over two-thirds (68.4%) of the children identified as poor readers were less sensitive than controls to either or both of the visual coherent motion or auditory 2Hz FM stimuli. © 2003 Elsevier Science (USA). All rights reserved.

Original languageEnglish
Pages (from-to)259-266
Number of pages8
JournalBrain and Language
Volume87
Issue number2
DOIs
Publication statusPublished - Nov 2003

Keywords

  • auditory frequency modulation
  • dyslexia
  • reading
  • temporal processing
  • visual coherent motion

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