Cerebral laterality for phonemic and prosodic cue decoding in children with autism

Yasuyo Minagawa-Kawai, Nozomi Naoi, Naoko Kikuchi, Jun Ichi Yamamoto, Katsuki Nakamura, Shozo Kojima

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

This study examined the cerebral functional lateralization, from a phonological perspective, in children with autism spectrum disorder (ASD) and typically developing children (TDC). With near infrared spectroscopy, we measured auditory evoked-responses in the temporal areas to phonemic and prosodic contrasts in word contexts. The results of TDC showed stronger left-dominant and right-dominant responses to phonemic and prosodic differences, respectively. Furthermore, although ASD children displayed similar tendencies, the functional asymmetry for phonemic changes was relatively weak, suggesting less-specialized left-brain functions. The typical asymmetry for the prosodic condition was further discussed in terms of acoustic-physical perceptual ability of ASD children. The study revealed differential neural recruitment in decoding phonetic cues between ASD children and TDC and verified the applicability of near infrared spectroscopy as a suitable neuroimaging method for children with developmental disorders.

Original languageEnglish
Pages (from-to)1219-1224
Number of pages6
JournalNeuroReport
Volume20
Issue number13
DOIs
Publication statusPublished - 2009 Aug

Keywords

  • Auditory area
  • Cerebral lateralization
  • Children with autism
  • Near infrared spectroscopy
  • Phoneme
  • Prosody
  • Speech perception

ASJC Scopus subject areas

  • Neuroscience(all)

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