A general audiovisual temporal processing deficit in adult readers with dyslexia

Ana A. Francisco, Alexandra Jesse, Margriet A. Groen, James M. McQueen

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Purpose: Because reading is an audiovisual process, reading impairment may reflect an audiovisual processing deficit. The aim of the present study was to test the existence and scope of such a deficit in adult readers with dyslexia. Method: We tested 39 typical readers and 51 adult readers with dyslexia on their sensitivity to the simultaneity of audiovisual speech and nonspeech stimuli, their time window of audiovisual integration for speech (using incongruent /aCa/ syllables), and their audiovisual perception of phonetic categories. Results: Adult readers with dyslexia showed less sensitivity to audiovisual simultaneity than typical readers for both speech and nonspeech events. We found no differences between readers with dyslexia and typical readers in the temporal window of integration for audiovisual speech or in the audiovisual perception of phonetic categories. Conclusions: The results suggest an audiovisual temporal deficit in dyslexia that is not specific to speech-related events. But the differences found for audiovisual temporal sensitivity did not translate into a deficit in audiovisual speech perception. Hence, there seems to be a hiatus between simultaneity judgment and perception, suggesting a multisensory system that uses different mechanisms across tasks. Alternatively, it is possible that the audiovisual deficit in dyslexia is only observable when explicit judgments about audiovisual simultaneity are required.

Original languageEnglish (US)
Pages (from-to)144-158
Number of pages15
JournalJournal of Speech, Language, and Hearing Research
Volume60
Issue number1
DOIs
StatePublished - Jan 2017
Externally publishedYes

ASJC Scopus subject areas

  • Language and Linguistics
  • Linguistics and Language
  • Speech and Hearing

Fingerprint

Dive into the research topics of 'A general audiovisual temporal processing deficit in adult readers with dyslexia'. Together they form a unique fingerprint.

Cite this