Assessing cerebral representations of short and long vowel categories by NIRS

Yasuyo Minagawa, Koichi Mori, Izumi Furuya, Ryoko Hayashi, Yutaka Sato

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

The present study examined cerebral representations of Japanese long and short vowel categories with near-infrared spectroscopy (NIRS) by measuring the hemodynamic changes. Results showed that NIRS could capture phoneme-specific information. The left side of the auditory area showed large hemodynamic changes only for contrasting stimuli between which the phonemic boundary was estimated, but not for stimuli differing by an equal duration but belonging to the same phoneme category. Left dominance in phoneme processing was also confirmed for the across-category stimuli. These findings indicate that the Japanese vowel contrast based only on duration differences is dealt with in the same language-dominant hemisphere as other spectrally varying phonemic categories, and that the cortical activities related to its processing can be detected with NIRS.

Original languageEnglish
Pages (from-to)581-584
Number of pages4
JournalNeuroReport
Volume13
Issue number5
Publication statusPublished - 2002 Apr 16
Externally publishedYes

Fingerprint

Near-Infrared Spectroscopy
Hemodynamics
Auditory Cortex
Language

Keywords

  • Categorical perception
  • Long and short vowels
  • Near-infrared spectroscopy
  • Phoneme perception

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Minagawa, Y., Mori, K., Furuya, I., Hayashi, R., & Sato, Y. (2002). Assessing cerebral representations of short and long vowel categories by NIRS. NeuroReport, 13(5), 581-584.

Assessing cerebral representations of short and long vowel categories by NIRS. / Minagawa, Yasuyo; Mori, Koichi; Furuya, Izumi; Hayashi, Ryoko; Sato, Yutaka.

In: NeuroReport, Vol. 13, No. 5, 16.04.2002, p. 581-584.

Research output: Contribution to journalArticle

Minagawa, Y, Mori, K, Furuya, I, Hayashi, R & Sato, Y 2002, 'Assessing cerebral representations of short and long vowel categories by NIRS', NeuroReport, vol. 13, no. 5, pp. 581-584.
Minagawa Y, Mori K, Furuya I, Hayashi R, Sato Y. Assessing cerebral representations of short and long vowel categories by NIRS. NeuroReport. 2002 Apr 16;13(5):581-584.
Minagawa, Yasuyo ; Mori, Koichi ; Furuya, Izumi ; Hayashi, Ryoko ; Sato, Yutaka. / Assessing cerebral representations of short and long vowel categories by NIRS. In: NeuroReport. 2002 ; Vol. 13, No. 5. pp. 581-584.
@article{c60d6b69fb2a433697ed207bbdef0c88,
title = "Assessing cerebral representations of short and long vowel categories by NIRS",
abstract = "The present study examined cerebral representations of Japanese long and short vowel categories with near-infrared spectroscopy (NIRS) by measuring the hemodynamic changes. Results showed that NIRS could capture phoneme-specific information. The left side of the auditory area showed large hemodynamic changes only for contrasting stimuli between which the phonemic boundary was estimated, but not for stimuli differing by an equal duration but belonging to the same phoneme category. Left dominance in phoneme processing was also confirmed for the across-category stimuli. These findings indicate that the Japanese vowel contrast based only on duration differences is dealt with in the same language-dominant hemisphere as other spectrally varying phonemic categories, and that the cortical activities related to its processing can be detected with NIRS.",
keywords = "Categorical perception, Long and short vowels, Near-infrared spectroscopy, Phoneme perception",
author = "Yasuyo Minagawa and Koichi Mori and Izumi Furuya and Ryoko Hayashi and Yutaka Sato",
year = "2002",
month = "4",
day = "16",
language = "English",
volume = "13",
pages = "581--584",
journal = "NeuroReport",
issn = "0959-4965",
publisher = "Lippincott Williams and Wilkins",
number = "5",

}

TY - JOUR

T1 - Assessing cerebral representations of short and long vowel categories by NIRS

AU - Minagawa, Yasuyo

AU - Mori, Koichi

AU - Furuya, Izumi

AU - Hayashi, Ryoko

AU - Sato, Yutaka

PY - 2002/4/16

Y1 - 2002/4/16

N2 - The present study examined cerebral representations of Japanese long and short vowel categories with near-infrared spectroscopy (NIRS) by measuring the hemodynamic changes. Results showed that NIRS could capture phoneme-specific information. The left side of the auditory area showed large hemodynamic changes only for contrasting stimuli between which the phonemic boundary was estimated, but not for stimuli differing by an equal duration but belonging to the same phoneme category. Left dominance in phoneme processing was also confirmed for the across-category stimuli. These findings indicate that the Japanese vowel contrast based only on duration differences is dealt with in the same language-dominant hemisphere as other spectrally varying phonemic categories, and that the cortical activities related to its processing can be detected with NIRS.

AB - The present study examined cerebral representations of Japanese long and short vowel categories with near-infrared spectroscopy (NIRS) by measuring the hemodynamic changes. Results showed that NIRS could capture phoneme-specific information. The left side of the auditory area showed large hemodynamic changes only for contrasting stimuli between which the phonemic boundary was estimated, but not for stimuli differing by an equal duration but belonging to the same phoneme category. Left dominance in phoneme processing was also confirmed for the across-category stimuli. These findings indicate that the Japanese vowel contrast based only on duration differences is dealt with in the same language-dominant hemisphere as other spectrally varying phonemic categories, and that the cortical activities related to its processing can be detected with NIRS.

KW - Categorical perception

KW - Long and short vowels

KW - Near-infrared spectroscopy

KW - Phoneme perception

UR - http://www.scopus.com/inward/record.url?scp=0037117693&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037117693&partnerID=8YFLogxK

M3 - Article

VL - 13

SP - 581

EP - 584

JO - NeuroReport

JF - NeuroReport

SN - 0959-4965

IS - 5

ER -