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Functional neuroimaging study on the relationship between infant-directed vocabulary and development of speech perception and production in infants

Research Project

Project/Area Number 16K12451
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Cognitive science
Research InstitutionNagaoka University of Technology (2017-2019)
Institute of Physical and Chemical Research (2016)

Principal Investigator

Akimoto Yoritaka  長岡技術科学大学, 工学研究科, 助教 (00555245)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords言語発達 / 対乳児発話 / 育児語型韻律 / 子音の弁別 / 脳機能計測 / 近赤外分光法 / 脳波計測 / 近赤外線分光法 / 育児語 / 認知科学 / NIRS / fMRI
Outline of Final Research Achievements

Experiments on native and non-native consonant discrimination and perception of prosodic form of infant-directed vocabulary were conducted in 5-month- and 9-month-old infants. Furthermore, experimentation on the production of infant-directed speech was conducted in adult participants.
The results demonstrated the following: (1) infants’ performance and brain activities for consonant discrimination were not only dependent on nativity of the speech stimuli but also on the directed change of consonants (e.g., from /l/ to /r/); (2) five-month-old infants displayed greater brain activity for prosodic forms of the infant-directed vocabulary than the control stimuli (not infant-directed vocabulary), whereas 9-month-old infants showed the opposite pattern; (3) brain activity during the production of infant-directed speech was different from that during the production of adult-directed speech in the right frontal lobe.

Academic Significance and Societal Importance of the Research Achievements

乳児に対して話しかける際には、韻律の強調や特殊な語彙の使用など、大人に対する発話とは異なった特徴的な話し方(対乳児発話)になることが知られている。この対乳児発話は乳児にとって認知しやすく、また言語発達に寄与することが報告されているが、その多くは欧米の言語を対象とした研究である。
本研究の成果は、日本語の育児語に多く存在する韻律のパターンが乳児の言語発達に寄与している可能性を示唆するものであり、対乳児発話の機能について欧米以外の言語から迫る貴重な知見である。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (14 results)

All 2020 2019 2018 2017

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (12 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] 簡易脳波計による英単語の難易度の違いを反映する脳反応の評価2019

    • Author(s)
      佐々木辰彌, 秋元頼孝, 中平勝子
    • Journal Title

      教育システム情報学会誌

      Volume: 36

    • NAID

      130007632219

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Alpha band event-related desynchronization underlying social situational context processing during irony comprehension: A magnetoencephalography source localization study2017

    • Author(s)
      Yoritaka Akimoto, Hidetoshi Takahashi, Atsuko Gunji, Yuu Kaneko, Michiko Asano, Junko Matsuo, Miho Ota, Hiroshi Kunugi, Takashi Hanakawa, Reiko Mazuka, Yoko Kamio
    • Journal Title

      Brain and Language

      Volume: 175 Pages: 42

    • DOI

      10.1016/j.bandl.2017.09.002

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 簡易脳波計を用いた対乳児発話産出の脳活動の計測2020

    • Author(s)
      増田泰人, 秋元頼孝, 中平勝子
    • Organizer
      教育システム情報学会2019年度学生研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 顔の親近性がβ律動に与える影響-簡易脳波計による計測-2019

    • Author(s)
      秋元頼孝
    • Organizer
      日本認知心理学会第17回大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 簡易脳波計による心の中での発話の脳反応計測2019

    • Author(s)
      増田泰人, 秋元頼孝, 中平勝子
    • Organizer
      教育システム情報学会2018年度学生研究発表会
    • Related Report
      2018 Research-status Report
  • [Presentation] Pilot considerations of brain activity detection based on difference of English words difficulty levels at recognition of English words2018

    • Author(s)
      Sasaki T, Akimoto Y, Nakahira K. T.
    • Organizer
      22nd International Conference on Knowledge-Based and Intelligent Information & Engineering Systems
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of regression-based trigger timing correction on the N170 ERP waveform using Emotiv EPOC+ with a limited number of triggers2018

    • Author(s)
      Akimoto Y, Takano G
    • Organizer
      Joint 10th International Conference on Soft Computing and Intelligent Systems and 19th International Symposium on Advanced Intelligent Systems
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] モバイル型簡易脳波計Emotiv EPOC+による顔に対するN170成分の計測の信頼性2018

    • Author(s)
      秋元頼孝
    • Organizer
      日本認知心理学会第16回大会
    • Related Report
      2018 Research-status Report
  • [Presentation] モバイル型簡易脳波計Emotiv EPOC+による顔に対する事象関連同期・脱同期の計測の信頼性2018

    • Author(s)
      秋元頼孝
    • Organizer
      日本心理学会第82回大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Brain responses in easy and difficult visual English words recognition using EMOTIV EPOC+: a pilot experiment2018

    • Author(s)
      Sasaki T, Akimoto Y, Nakahira K. T.
    • Organizer
      The 7th International GIGAKU Conference in Nagaoka
    • Related Report
      2018 Research-status Report
  • [Presentation] 英単語認知時の脳活動の予備的検討2018

    • Author(s)
      佐々木辰彌, 秋元頼孝, 中平勝子
    • Organizer
      教育システム情報学会2017年度学生研究発表会
    • Related Report
      2017 Research-status Report
  • [Presentation] 生後5~6か月の日本人乳児における/l-r/の弁別時の脳反応2018

    • Author(s)
      秋元頼孝
    • Organizer
      新潟心理学会第54回大会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 日本人乳児における/b-g/および/l-r/の弁別課題の脳反応2017

    • Author(s)
      秋元頼孝、高橋美樹、山根直人、柴田奈津美、幡野由理、森島三那子、山田玲子、馬塚れい子
    • Organizer
      日本認知心理学会第15回大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Neural response to /l-r/ contrast in 9.5-month-old Japanese infants2017

    • Author(s)
      Yoritaka Akimoto, Miki Takahasi, Naoto Yamane, Reiko Mazuka
    • Organizer
      18th International Symposium on Advanced Intelligent Systems
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2021-02-19  

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