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Titolo:
Hemispheric lateralization in an analysis of speech sounds - Left hemisphere dominance replicated in Japanese subjects
Autore:
Koyama, S; Gunji, A; Yabe, H; Oiwa, S; Akahane-Yamada, R; Kakigi, R; Naatanen, R;
Indirizzi:
Natl Inst Physiol Sci, Dept Integrat Physiol, Aichi 4448585, Japan Natl Inst Physiol Sci Aichi Japan 4448585 Physiol, Aichi 4448585, Japan Hirosaki Univ, Sch Med, Dept Neuropsychiat, Hirosaki, Aomori 036, Japan Hirosaki Univ Hirosaki Aomori Japan 036 hiat, Hirosaki, Aomori 036, Japan ATR, Human Informat Proc Res Labs, Kyoto, Japan ATR Kyoto JapanATR, Human Informat Proc Res Labs, Kyoto, Japan Univ Helsinki, Dept Psychol, Cognit Brain Res Unit, SF-00100 Helsinki, Finland Univ Helsinki Helsinki Finland SF-00100 Unit, SF-00100 Helsinki, Finland
Titolo Testata:
COGNITIVE BRAIN RESEARCH
fascicolo: 1-2, volume: 10, anno: 2000,
pagine: 119 - 124
SICI:
0926-6410(200009)10:1-2<119:HLIAAO>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVOKED MAGNETIC-FIELDS; AUDITORY-CORTEX; BRAIN; LANGUAGE; MAGNETOENCEPHALOGRAPHY; LOCALIZATION; RESPONSES; STIMULI; MEG;
Keywords:
mismatch negativity; speech; magnetoencephalography; auditory cortex; hemispheric lateralization;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Koyama, S Natl Inst Physiol Sci, Dept Integrat Physiol, Aichi 4448585, Japan Natl Inst Physiol Sci Aichi Japan 4448585 Aichi 4448585, Japan
Citazione:
S. Koyama et al., "Hemispheric lateralization in an analysis of speech sounds - Left hemisphere dominance replicated in Japanese subjects", COGN BRAIN, 10(1-2), 2000, pp. 119-124

Abstract

Evoked magnetic responses to speech sounds [R. Naatanen, A. Lehtokoski, M. Lennes, M. Cheour, M. Huotilainen, A. Iivonen, M. Vainio, P. Alku, R.J. Ilmoniemi, A. Luuk, J. Allik, J. Sinkkonen and K. Alho, Language-specific phoneme representations revealed by electric and magnetic brain responses. Nature, 385 (1997) 432-434.] were recorded from 13 Japanese subjects (right-handed). Infrequently presented vowels ([o]) among repetitive vowels ([e]) elicited the magnetic counterpart of mismatch negativity, MMNm (Bilateral, nine subjects; Left hemisphere alone, three subjects; Right hemisphere alone,one subject). The estimated source of the MMNm was stronger in the left than in the right auditory cortex. The sources were located posteriorly in the left than in the right auditory cortex. These findings are consistent with the results obtained in Finnish [R. Naatanen, A. Lehtokoski, M. Lennes, M. Cheour, M. Huotilainen, A. Iivonen, M.Vainio, P.Alku, R.J. Ilmoniemi, A. Luuk, J.,Allik, J. Sinkkonen and K. Alho, Language-specific phoneme representations revealed by electric and magnetic brain responses. Nature, 385 (1997) 432-434.][T. Rinne, K. Alho, P. Alku, M. Holi, J. Sinkkonen, J. Virtanen, O. Bertrand and R. Naatanen, Analysis of speech sounds is left-hemisphere predominant at 100-150 ms after sound onset. Neuroreport, 10 (1999) 1113-1117.] and English [K. Alho, J.F. Connolly, M. Cheour, A. Lehtokoski, M. Huotilainen, J. Virtanen, R. Aulanko and R.J. Ilmoniemi, Hemispheric lateralization in preattentive processing of speech sounds. Neurosci. Lett., 258 (1998) 9-12.] subjects. Instead of the Plm observed in Finnish [M. Tervaniemi, A. Kujala, K. Alho, J. Virtanen, R.J. Ilmoniemi and R. Naatanen, Functional specialization of the human auditory cortex in processing phonetic and musical sounds: A magnetoencephalographic (MEG) study. Neuroimage, 9 (1999) 330-336.] and English [K. Alho, J.F. Connolly, M. Cheour, A. Lehtokoski, M. Huotilainen, J. Virtanen, R. Aulanko and R.J. Ilmoniemi, Hemispheric lateralization in preattentive processing of speech sounds. Neurosci. Lett., 258(1998) 9-12.] subjects, prior to the MMNm, M60, was elicited by both rare and frequent sounds. Both MMNm and M60 sources were posteriorly located in the left than the right hemisphere. (C) 2000 Elsevier Science B.V. All rights reserved.

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Documento generato il 23/10/20 alle ore 14:20:29