Abstract
Near-infrared spectroscopic measurement of cerebral hemodynamics was used to investigate cerebral dominance during auditory language processing in preschool and school-age children who stutter. Analysis-synthesized Japanese words (/itta/ and /itte/) and intonation contrasts (/itta/ and /itta?/) were used for stimuli. The baseline block contained only /itta/, whereas the contrast block consisted of either the minimal pair or intonation pair, with the contrast words presented in random order at equal probabilities. To analyze cerebral lateralization, we calculated a laterality index (LI) from the peaks of the left and right total Hb responses for each contrast block, compared to the preceding baseline block in the auditory area. The results showed that there were no significant differences in LI between the minimal pair and intonation conditions in children who stutter. Within-subject analysis showed no subject with a significant leftward shift of LI in the minimal pair condition relative to the intonation condition. These results indicate that the cerebral dominance in processing heard speech may be in disarray in children who stutter.
| Original language | English |
|---|---|
| Pages (from-to) | 384-389 |
| Number of pages | 6 |
| Journal | Japan Journal of Logopedics and Phoniatrics |
| Volume | 47 |
| Issue number | 4 |
| Publication status | Published - 2006 Oct |
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Keywords
- Auditory cortex
- Children who stutter
- Laterality
- NIRS (near-infrared spectroscopy)
ASJC Scopus subject areas
- Rehabilitation
- Otorhinolaryngology
Cite this
Functional lateralization during phonological word processing in children who stutter - Measured by near-infrared spectroscopy. / Sato, Yutaka; Mori, Koichi; Koizumi, Toshizo; Minagawa, Yasuyo; Tanaka, Akihiro; Ozawa, Emi; Wakaba, Yoko.
In: Japan Journal of Logopedics and Phoniatrics, Vol. 47, No. 4, 10.2006, p. 384-389.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Functional lateralization during phonological word processing in children who stutter - Measured by near-infrared spectroscopy
AU - Sato, Yutaka
AU - Mori, Koichi
AU - Koizumi, Toshizo
AU - Minagawa, Yasuyo
AU - Tanaka, Akihiro
AU - Ozawa, Emi
AU - Wakaba, Yoko
PY - 2006/10
Y1 - 2006/10
N2 - Near-infrared spectroscopic measurement of cerebral hemodynamics was used to investigate cerebral dominance during auditory language processing in preschool and school-age children who stutter. Analysis-synthesized Japanese words (/itta/ and /itte/) and intonation contrasts (/itta/ and /itta?/) were used for stimuli. The baseline block contained only /itta/, whereas the contrast block consisted of either the minimal pair or intonation pair, with the contrast words presented in random order at equal probabilities. To analyze cerebral lateralization, we calculated a laterality index (LI) from the peaks of the left and right total Hb responses for each contrast block, compared to the preceding baseline block in the auditory area. The results showed that there were no significant differences in LI between the minimal pair and intonation conditions in children who stutter. Within-subject analysis showed no subject with a significant leftward shift of LI in the minimal pair condition relative to the intonation condition. These results indicate that the cerebral dominance in processing heard speech may be in disarray in children who stutter.
AB - Near-infrared spectroscopic measurement of cerebral hemodynamics was used to investigate cerebral dominance during auditory language processing in preschool and school-age children who stutter. Analysis-synthesized Japanese words (/itta/ and /itte/) and intonation contrasts (/itta/ and /itta?/) were used for stimuli. The baseline block contained only /itta/, whereas the contrast block consisted of either the minimal pair or intonation pair, with the contrast words presented in random order at equal probabilities. To analyze cerebral lateralization, we calculated a laterality index (LI) from the peaks of the left and right total Hb responses for each contrast block, compared to the preceding baseline block in the auditory area. The results showed that there were no significant differences in LI between the minimal pair and intonation conditions in children who stutter. Within-subject analysis showed no subject with a significant leftward shift of LI in the minimal pair condition relative to the intonation condition. These results indicate that the cerebral dominance in processing heard speech may be in disarray in children who stutter.
KW - Auditory cortex
KW - Children who stutter
KW - Laterality
KW - NIRS (near-infrared spectroscopy)
UR - http://www.scopus.com/inward/record.url?scp=33750335753&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33750335753&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:33750335753
VL - 47
SP - 384
EP - 389
JO - Japan Journal of Logopedics and Phoniatrics
JF - Japan Journal of Logopedics and Phoniatrics
SN - 0030-2813
IS - 4
ER -