Schizotypal personality traits and atypical lateralization in motor and language functions

Tomohisa Asai*, Eriko Sugimori, Yoshihiko Tanno

*この研究の対応する著者

研究成果: Article査読

23 被引用数 (Scopus)

抄録

Atypical cerebral lateralization in motor and language functions in regard to schizotypal personality traits in healthy populations, as well as among schizophrenic patients, has attracted attention because these traits may represent a risk factor for schizophrenia. Although the relationship between handedness and schizotypal personality has been widely examined, few studies have adopted an experimental approach. This study consisted of three experiments focusing on motor and language functional lateralization in regard to schizotypal personality in the absence of mental illness: line-drawing, finger tapping, and a semantic go/no-go task. The results suggested that positive schizotypal personality might be related to functional non-lateralization in regard to at least some functions (e.g., spatial motor control and semantic processing in the present study). Subjects with high schizotypal personality traits performed equally with their right and left-hands in the line-drawing task and they reacted equally with their right and left-hands in a semantic go/no-go task involving semantic auditory stimuli presented in both ears. However, those low in schizotypal personality traits showed typical lateralization in response to these tasks. We discuss the implications of these findings for schizotypal atypical lateralization.

本文言語English
ページ(範囲)26-37
ページ数12
ジャーナルBrain and Cognition
71
1
DOI
出版ステータスPublished - 2009 10月 1
外部発表はい

ASJC Scopus subject areas

  • 神経心理学および生理心理学
  • 実験心理学および認知心理学
  • 発達心理学および教育心理学
  • 人文科学(その他)
  • 認知神経科学

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