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Deepening and Developing Cognitive Psychological Research on Synesthesia

Research Project

Project/Area Number 19H01770
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 10040:Experimental psychology-related
Research InstitutionTsukuba Gakuin University (2021-2022)
The University of Tokyo (2019-2020)

Principal Investigator

Kazuhiko Yokosawa  筑波学院大学, 経営情報学部, 教授 (20311649)

Co-Investigator(Kenkyū-buntansha) 伊藤 浩介  新潟大学, 脳研究所, 准教授 (30345516)
浅野 倫子  東京大学, 大学院人文社会系研究科(文学部), 准教授 (40553607)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2021: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2020: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2019: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Keywords共感覚 / 色字共感覚 / 色聴共感覚 / 絶対音感 / 序数擬人化 / 感覚間協応 / 認知心理学 / 統合的認知
Outline of Research at the Start

共感覚に関する認知心理学的研究の深化と展開に取り組む。色字共感覚について、色に付随する質感についても調べ、超長期にわたる縦断的研究にも取り組み、共感覚研究を深化させる。さらに、色字共感覚に加えて色聴共感覚の研究も展開するとともに、非共感覚者における感覚間協応や絶対音感についても調べ、共感覚との関係を明らかにする。共感覚的認知におけるこれらの取り組みによって、共感覚全般のメカニズムの解明を目指す。

Outline of Final Research Achievements

Our research was focused on the deepening and development of cognitive psychological research on synesthesia, with a particular focus on grapheme-color synesthesia. Based on the accumulated research on grapheme-color synesthesia, we have deepened our research on grapheme-color synesthesia, and have also developed our research on the properties of synesthesia between different types of synesthesia, and on the crossmodal correspondence between synesthetes and non-synesthetes. Specifically, we have been studying the long-term stability of grapheme-color synesthesia, and have obtained various research results, such as the fact that the stability of grapheme-color correspondence over a period of five to eight years has shown that letters with low intimacy are less stable in synesthetic color both in the short term and in the long term. We were able to have them published as academic papers in major academic journals, as well as presenting them at domestic and international conferences.

Academic Significance and Societal Importance of the Research Achievements

これまでの共感覚研究の多くが、色字共感覚に限られていたが、色聴共感覚や序数擬人化共感覚など、別の共感覚研究に展開できたことは、学術的意義は大きい。また、研究成果に基づき、「共感覚 統合の多様性」(勁草書房)と題する、共感覚および感覚間協応についての学術書や、一般向けの図書として「ドレミファソラシは虹の七色?」(光文社)と題する書籍を出版したほか、サイエンスカフェなどのアウトリーチ活動を通じて、研究成果を広く社会に還元することができたので、共感覚に関する社会的偏見を軽減する契機になった社会的意義は少なくないと思われる。

Report

(4 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (25 results)

All 2022 2021 2020 2019

All Journal Article (10 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 9 results,  Open Access: 4 results) Presentation (13 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results) Book (2 results)

  • [Journal Article] 多感覚の統合的認知の基礎と 感覚提示インタフェースへの応用可能性2022

    • Author(s)
      大野雅貴、横澤一彦、鳴海拓志
    • Journal Title

      日本バーチャルリアリティ学会論文誌

      Volume: 27 Pages: 18-28

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cross-modal correspondence between auditory pitch and visual elevation modulates audiovisual temporal recalibration2022

    • Author(s)
      Uno Kyuto, Yokosawa Kazuhiko
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 1-10

    • DOI

      10.1038/s41598-022-25614-3

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Do the colors of your letters depend on your language? Language-dependent and universal influences on grapheme-color synesthesia in seven languages.2021

    • Author(s)
      Root, N., Asano, M., Melero, H., Kim, C. Y., Sidoroff-Dorso, A. V., Vatakis, A., Yokosawa, K., Ramachandran, V., & Rouw, R.
    • Journal Title

      Consciousness and Cognition

      Volume: 95 Pages: 1-15

    • DOI

      10.1016/j.concog.2021.103192

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Consistency of synesthetic association varies with grapheme familiarity: A longitudinal study of grapheme-color synesthesia2021

    • Author(s)
      Uno Kyuto、Asano Michiko、Yokosawa Kazuhiko
    • Journal Title

      Consciousness and Cognition

      Volume: 89 Pages: 103090-103090

    • DOI

      10.1016/j.concog.2021.103090

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Grapheme-color synesthesia: Colors, graphemes, and learning2020

    • Author(s)
      浅野 倫子
    • Journal Title

      The Japanese Journal of Psychonomic Science

      Volume: 39 Issue: 1 Pages: 110-116

    • DOI

      10.14947/psychono.39.19

    • NAID

      130007940630

    • ISSN
      0287-7651, 2188-7977
    • Year and Date
      2020-09-30
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Grapheme-color associations can transfer to novel graphemes when synesthetic colors function as grapheme “discriminating markers”2020

    • Author(s)
      Uno Kyuto、Asano Michiko、Kadowaki Hana、Yokosawa Kazuhiko
    • Journal Title

      Psychonomic Bulletin & Review

      Volume: 27 Issue: 4 Pages: 700-706

    • DOI

      10.3758/s13423-020-01732-9

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synaesthetic colour associations for Japanese Kanji characters: from the perspective of grapheme learning2019

    • Author(s)
      Asano Michiko、Takahashi So-ichiro、Tsushiro Takuya、Yokosawa Kazuhiko
    • Journal Title

      Philosophical Transactions of the Royal Society B: Biological Sciences

      Volume: 374:20180349 Issue: 1787 Pages: 1-12

    • DOI

      10.1098/rstb.2018.0349

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Auditory T-Complex Reveals Reduced Neural Activities in the Right Auditory Cortex in Musicians With Absolute Pitch2019

    • Author(s)
      Matsuda Masato、Igarashi Hironaka、Itoh Kosuke
    • Journal Title

      Frontiers in Neuroscience

      Volume: 13 Pages: 1-1

    • DOI

      10.3389/fnins.2019.00809

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Automaticity of pitch class-color synesthesia as revealed by a Stroop-like effect2019

    • Author(s)
      Itoh Kosuke、Sakata Honami、Igarashi Hironaka、Nakada Tsutomu
    • Journal Title

      Consciousness and Cognition

      Volume: 71 Pages: 86-91

    • DOI

      10.1016/j.concog.2019.04.001

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 音楽と共感覚2019

    • Author(s)
      伊藤浩介
    • Journal Title

      生体の科学

      Volume: 70 Pages: 504-508

    • Related Report
      2019 Annual Research Report
  • [Presentation] 共感覚の文字と色はどう結びつくか2021

    • Author(s)
      浅野倫子
    • Organizer
      日本語用論学会メタファー研究会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 共感覚研究の新展開2021

    • Author(s)
      横澤 一彦, 浅野 倫子, 伊藤 浩介, 宇野 究人
    • Organizer
      日本心理学会第85回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] オンラインの質問に答えるだけで共感覚者になった数十例2021

    • Author(s)
      伊藤浩介
    • Organizer
      日本基礎心理学会第40回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 幼児におけるOrdinal Linguistic Personification (OLP) 傾向の調査2021

    • Author(s)
      櫻井晴子, 奥村安寿子, 北村柚葵, 北洋輔, 浅野倫子
    • Organizer
      日本基礎心理学会第40回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Factors influencing longitudinal consistency of synesthetic colors for graphemes2020

    • Author(s)
      Yokosawa, K., Uno, K., & Asano, M.
    • Organizer
      61st Annual Meeting of the Psychonomic Society
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Longitudinal consistency of synesthetic colors for 300 graphemes2020

    • Author(s)
      Yokosawa, K., Uno, K., & Asano, M.
    • Organizer
      V-VSS 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 色字共感覚の長期時間安定性に関する縦断研究2020

    • Author(s)
      宇野究人・浅野倫子・横澤一彦
    • Organizer
      日本心理学会第84回大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 感覚間協応が記憶と嗜好度に与える影響2020

    • Author(s)
      鳥羽山莉沙・草野遥菜・横澤一彦
    • Organizer
      日本心理学会第84回大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Ordinal Linguistic Personification (OLP) の特性の検討:中途喪失経験に着目して2020

    • Author(s)
      櫻井晴子・浅野倫子
    • Organizer
      日本基礎心理学会第39回大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 共感覚のオンライン大規模調査2020

    • Author(s)
      伊藤浩介
    • Organizer
      日本基礎心理学会第39回大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 音名が曖昧な音に対する色聴共感覚者の色の励起に関する検討2019

    • Author(s)
      原島 小也可、鳥羽山 莉沙、横澤 一彦
    • Organizer
      日本心理学会第83回大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 音声によって文字を聴覚呈示した際の色字共感覚色の生起に関する検討2019

    • Author(s)
      鳥羽山 莉沙、谷輪真由香、横澤 一彦
    • Organizer
      日本基礎心理学会第38回大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Influence of synesthetic color experience on brightness perception2019

    • Author(s)
      Uno, K., & Yokosawa, K.
    • Organizer
      The 23rd Meeting of the Association for the Scientific Study of Consciousness
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Book] ドレミファソラシは虹の七色?2021

    • Author(s)
      伊藤浩介
    • Total Pages
      256
    • Publisher
      光文社
    • ISBN
      9784334045302
    • Related Report
      2020 Annual Research Report
  • [Book] 共感覚2020

    • Author(s)
      浅野 倫子、横澤 一彦
    • Total Pages
      272
    • Publisher
      勁草書房
    • ISBN
      9784326251131
    • Related Report
      2020 Annual Research Report

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Published: 2019-04-18   Modified: 2024-01-30  

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