Brain lateralization for mismatch response to across- and within-category change of vowels

Kiyoto Kasai, Haruyasu Yamada, Satoru Kamio, Kazuyuki Nakagome, Akira Iwanami, Masato Fukuda, Kenji Itoh, Ichiro Koshida, Masato Yumoto, Keiji Iramina, Nobumasa Kato, Shoogo Ueno

研究成果: Contribution to journalArticle査読

54 被引用数 (Scopus)

抄録

Differences in hemispheric predominance between across- and within-category change perception of vowels were assessed using a whole-head magnetoencephalography. The magnetic mismatch responses (MMNm) to pure-tone and vowel within-category changes were significantly predominant in the right hemisphere; on the other hand, vowel across-category MMNm did not differ in power between hemispheres. The results suggest that both hemispheres are symmetrically activated in the preattentive across-category change perception of vowels, while the within-category change of a vowel is analyzed as the change in physical features of the stimuli, thus predominantly activating the right hemisphere. Thus, the relative contribution of the left auditory cortex in the preattentive speech processing may occur only at the level of perception of the vowel across-category change.

本文言語英語
ページ(範囲)2467-2471
ページ数5
ジャーナルNeuroReport
12
11
DOI
出版ステータス出版済み - 8 8 2001
外部発表はい

All Science Journal Classification (ASJC) codes

  • 神経科学(全般)

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