Investigating the functional integrity of the dorsal visual pathway in autism and dyslexia

Elizabeth Pellicano*, Lisa Y. Gibson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

62 Citations (Scopus)

Abstract

Numerous reports of elevated global motion thresholds across a variety of neurodevelopmental disorders have prompted researchers to suggest that abnormalities in global motion perception are a result of a general deficiency in the dorsal visual pathway. To test this hypothesis, we assessed the integrity of the dorsal visual pathway at lower subcortical (sensitivity to flicker contrast) and higher cortical (sensitivity to global motion) levels in children with autism, children with dyslexia, and typically developing children, of similar age and ability. While children with autism demonstrated intact lower-level, but impaired higher-level dorsal-stream functioning, children with dyslexia displayed abnormalities at both lower and higher levels of the dorsal visual stream. These findings suggest that these disorders can be dissociated according to the origin of the impairment along the dorsal-stream pathway. Implications for general cross-syndrome accounts are discussed.

Original languageEnglish
Pages (from-to)2593-2596
Number of pages4
JournalNeuropsychologia
Volume46
Issue number10
DOIs
Publication statusPublished - Aug 2008
Externally publishedYes

Keywords

  • dorsal-stream functioning
  • autism
  • dyslexia
  • developmental disorders
  • visual perception

Fingerprint

Dive into the research topics of 'Investigating the functional integrity of the dorsal visual pathway in autism and dyslexia'. Together they form a unique fingerprint.

Cite this