| Presentation | 2003/9/9 Cortical Lateralization of Spoken Word Processing in Stutterers Measured by Near Infrared Spectroscopy Yutaka Sato, Koichi Mori, Toshizo Koizumi, Yasuyo Minagawa-Kawai, Akihiro Tanaka, Emi Ozawa, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Cerebral lateralization of speech processing in those who stutter were assessed with noninvasive brain imaging technique, multi-channel near infrared spectroscopy (NIRS), with which hemodynamic responses were recorded to analysis-synthesized intonational (voice pitch) (/itta/ and /itta?/) and phonemic (/itta/ and /itte/) minimal contrast word trains. The baseline block contained only /itta/, whereas the contrast block consisted of either a phoneme or a pitch minimal pair, whose contrast words were presented randomly at the equal probabilities. To analyze cerebral lateralization, we calculated laterality index of the peaks of the left and right total hemoglobin (Hb) responses to each contrast block relative to the preceding baseline block in the auditory area. Right-handed adults and children who stutter did not show normal leftward dominance for the phonemic contrast, which indicates that the cerebral dominance in processing heard speech is in disarray even in school-age stutterers. The NIRS method may be useful in screening young stutterers and in elucidating neural correlates of stuttering. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Stuttering / Cerebral lateralization / Near infrared spectroscopy (NIRS) |
| Paper # | TL2003-23 |
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| Conference Information | |
| Committee | TL |
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| Conference Date | 2003/9/9(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Thought and Language (TL) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Cortical Lateralization of Spoken Word Processing in Stutterers Measured by Near Infrared Spectroscopy |
| Sub Title (in English) | |
| Keyword(1) | Stuttering |
| Keyword(2) | Cerebral lateralization |
| Keyword(3) | Near infrared spectroscopy (NIRS) |
| 1st Author's Name | Yutaka Sato |
| 1st Author's Affiliation | National Rehabilitation Center for Persons with Disabilities() |
| 2nd Author's Name | Koichi Mori |
| 2nd Author's Affiliation | National Rehabilitation Center for Persons with Disabilities |
| 3rd Author's Name | Toshizo Koizumi |
| 3rd Author's Affiliation | National Rehabilitation Center for Persons with Disabilities |
| 4th Author's Name | Yasuyo Minagawa-Kawai |
| 4th Author's Affiliation | National Rehabilitation Center for Persons with Disabilities |
| 5th Author's Name | Akihiro Tanaka |
| 5th Author's Affiliation | National Rehabilitation Center for Persons with Disabilities |
| 6th Author's Name | Emi Ozawa |
| 6th Author's Affiliation | National Rehabilitation Center for Persons with Disabilities |
| Date | 2003/9/9 |
| Paper # | TL2003-23 |
| Volume (vol) | vol.103 |
| Number (no) | 307 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |