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Extraction of information structure from brain activity corresponding to qualia structure

Planned Research

Project AreaUnderstanding the relationship between the structure of qualia and the structure of information processing extracted from brain activity
Project/Area Number 20H05712
Research Category

Grant-in-Aid for Transformative Research Areas (B)

Allocation TypeSingle-year Grants
Review Section Transformative Research Areas, Section (I)
Research InstitutionThe University of Tokyo

Principal Investigator

Masafumi Oizumi  東京大学, 大学院総合文化研究科, 准教授 (30715371)

Project Period (FY) 2020-10-02 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥23,140,000 (Direct Cost: ¥17,800,000、Indirect Cost: ¥5,340,000)
Fiscal Year 2022: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Fiscal Year 2021: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Fiscal Year 2020: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Keywords意識 / クオリア / クオリア構造 / 教師なしアラインメント / 最適輸送 / Gromov-Wasserstein距離 / 情報 / 統合情報理論
Outline of Research at the Start

本研究の目的は、クオリアと脳活動との間にある数理的な関係性を明らかにすることである。特に、意識の本質的な性質を情報と統合にあると考え、神経細胞間で統合された情報のパターン(情報構造)とクオリアが対応する、という仮説の検証に取り組む。具体的には、B01山田が得る脳活動データから抽出する情報構造と、A01土谷が大規模心理物理実験によって抽出するクオリア構造との対応関係を見ることで、クオリア構造と情報構造とが対応するかを明らかにする。

Outline of Final Research Achievements

We have developed a method to compare the subjective experiences (qualia) of different individuals without pre-defining the correspondence between qualia across individuals. This method does not assume that individual subjective experiences (e.g., the 'red' qualia when seeing red) are identical, but compares based solely on the relationships between qualia (qualia structure). By applying this method to color similarity data and object similarity judgment data, we demonstrated that the qualia structures correspond between different subjects. On the other hand, we also showed that the qualia structures do not align between subjects with typical and atypical color vision. Furthermore, by using this method to investigate the correspondence between the structure of brain activity and the qualia structure, it becomes possible to tackle the question of what kind of brain activity corresponds to qualia.

Academic Significance and Societal Importance of the Research Achievements

個人の主観の質(クオリア)は定量化することが不可能なのものと考えられてきた。我々はクオリア同士の関係性(クオリア構造)に着目し、個人間でクオリア構造同士が対応するかどうかを、定量的に比較する新しい数学的な方法論を提案した。この方法論は従来法とは異なり、予め自分の「赤」の主観が他人の「赤」の主観と対応することを仮定しないで、関係性の観点から自分の「赤」が他人の「赤」と対応するかどうかを調べる。このような主観的な構造の比較を通して、従来不可能と考えられてきた自分と他者のクオリアの類似性を定量的に評価することが可能となった。この枠組みで主観と脳活動との対応関係を調べることも可能となる。

Report

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

    (16 results)

All 2023 2022 2021 Other

All Int'l Joint Research (1 results) Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (8 results) (of which Int'l Joint Research: 1 results,  Invited: 5 results)

  • [Int'l Joint Research] Monash University(オーストラリア)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Is my "red" your "red"?: Unsupervised alignment of qualia structures via optimal transport2023

    • Author(s)
      Kawakita Genji、Zeleznikow-Johnston Ariel、Takeda Ken、Tsuchiya Naotsugu、Oizumi Masafumi
    • Journal Title

      PsyArXiv

      Volume: -

    • DOI

      10.31234/osf.io/h3pqm

    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Journal Article] 特集 意識 Ⅲ.理論的アプローチ 意識の数理的な理論はどのように実験的に検証されるべきか?2022

    • Author(s)
      大泉 匡史
    • Journal Title

      生体の科学

      Volume: 73 Issue: 1 Pages: 59-63

    • DOI

      10.11477/mf.2425201466

    • ISSN
      0370-9531, 1883-5503
    • Year and Date
      2022-02-15
    • Related Report
      2021 Annual Research Report
  • [Journal Article] Bidirectionally connected cores in a mouse connectome: towards extracting the brain subnetworks essential for consciousness2022

    • Author(s)
      Kitazono Jun、Aoki Yuma、Oizumi Masafumi
    • Journal Title

      Cerebral Cortex

      Volume: 33 Issue: 4 Pages: 1383-1402

    • DOI

      10.1093/cercor/bhac143

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quantifying brain state transition cost via Schr?dinger Bridge2022

    • Author(s)
      Kawakita Genji、Kamiya Shunsuke、Sasai Shuntaro、Kitazono Jun、Oizumi Masafumi
    • Journal Title

      Network Neuroscience

      Volume: 6 Issue: 1 Pages: 118-134

    • DOI

      10.1162/netn_a_00213

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Bidirectionally connected cores in a mouse connectome: Towards extracting the brain subnetworks essential for consciousness2022

    • Author(s)
      Jun Kitazono, Yuma Aoki, Masafumi Oizumi
    • Journal Title

      Cerebral Cortex

      Volume: -

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Information flow in the rat thalamo-cortical system: spontaneous vs. stimulus-evoked activities2021

    • Author(s)
      Ishizu Kotaro、Shiramatsu Tomoyo I.、Hitsuyu Rie、Oizumi Masafumi、Tsuchiya Naotsugu、Takahashi Hirokazu
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 19252-19252

    • DOI

      10.1038/s41598-021-98660-y

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fast, cell-resolution, contiguous-wide two-photon imaging to reveal functional network architectures across multi-modal cortical areas2021

    • Author(s)
      K. Ota, Y. Oisi, T. Suzuki, M. Ikeda, Y. Ito, T. Ito, H. Uwamori, K. Kobayashi, M. Kobayashi, M. Odagawa, C. Matsubara, Y. Kuroiwa, M. Horikoshi, J. Matsushita, H. Hioki, M. Ohkura, J. Nakai, M. Oizumi, A. Miyawaki, T. Aonishi, T. Ode and M. Murayama
    • Journal Title

      Neuron

      Volume: - Issue: 11 Pages: 1-15

    • DOI

      10.1016/j.neuron.2021.03.032

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Is my “red” your “red”?: Unsupervised alignment of qualia structures via optimal transport2022

    • Author(s)
      大泉匡史
    • Organizer
      Workshop OT 2023
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Is my "red" your "red"?: Unsupervised alignment of qualia structures via optimal transport2022

    • Author(s)
      G. Kawakita, A. Johnston, N. Tsuchiya, M. Oizumi
    • Organizer
      Mind Brain Body Symposium 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 意識の質(クオリア)と脳活動をつなぐ数理の探求2022

    • Author(s)
      大泉匡史
    • Organizer
      日本視覚学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] クオリア構造の定量化と発達研究への応用2021

    • Author(s)
      大泉匡史
    • Organizer
      日本赤ちゃん学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Towards elucidating the mathematical relationship between qualia and brain activity2021

    • Author(s)
      Masafumi Oizumi
    • Organizer
      日本神経科学学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] クオリア構造の定量化に基づく意識の理論の検証2021

    • Author(s)
      大泉匡史
    • Organizer
      CBI学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Neural manifold alignment for the foundation of brain-to-brain communication2021

    • Author(s)
      Genji Kawakita, Masafumi Oizumi
    • Organizer
      日本神経回路学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 色のカテゴリカルな神経表現の獲得2021

    • Author(s)
      片岡 麻輝, 大泉 匡史
    • Organizer
      日本神経回路学会
    • Related Report
      2021 Annual Research Report

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Published: 2020-10-30   Modified: 2024-01-30  

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