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Analysis of brain word networks in schizophrenia using graph theory and natural language processing techniques

Research Project

Project/Area Number 20K21567
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 52:General internal medicine and related fields
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Takahashi Hidehiko  東京医科歯科大学, 大学院医歯学総合研究科, 教授 (60415429)

Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2020: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords統合失調症 / 自然言語処理技術 / グラフ理論 / 脳画像 / 自然言語処理
Outline of Research at the Start

統合失調症患者の脳内における単語の表象ネットワークの乱れを脳内における単語の表象ネットワークにグラフ理論による解析を適応し、定量的に解析することを目的とする。対象は統合失調症患者で、臨床・心理データに加え、脳MRIを取得する。被験者に自然動画刺激を提示し、全脳活動をfMRIによって記録する。動画に含まる単語のラベル時系列と脳活動から、重み係数を求める。この過程で、単語をベクトルに変換する自然言語処理技術Word2Vecを用いる。脳内単語ベクトルの任意の2語の組み合わせの類似度を表した行列を得るこの行列から、隣接行列を作成し、グラフ理論による脳内の単語表象のネットワーク解析を行う。

Outline of Final Research Achievements

We applied the natural language processing algorithm Word2vec and encoding modeling to the video information and brain activity data, and quantified various semantic representations in the brain as brain activity patterns. We evaluated the structural characteristics of the semantic network in the brain, which was constructed based on the similarity between semantic representations. The semantic networks in the brains of healthy subjects showed high small-worldness as in natural language, suggesting that small-worldness is a universal property of networks related to semantic knowledge. On the other hand, small-worldness was decreased in the brain semantic network of schizophrenia patients and was negatively correlated with the severity of delusions.

Academic Significance and Societal Importance of the Research Achievements

研究により統合失調症の連合弛緩は、脳内において意味ネットワークのランダム化として表れていることが明らかになった。また、本研究の手法は精神疾患患者の主観的体験を患者の発話に依ることなく脳活動から直接評価できる点で、診断、治療の新たな可能性をひらくものと期待される。

Report

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

    (19 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (5 results) Journal Article (8 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 8 results,  Open Access: 7 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 6 results)

  • [Int'l Joint Research] University College London(英国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Oxford大学(英国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Johns Hopkins University/UCLA(米国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] University Medical Center Utrecht(オランダ)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] University of Hong Kong(中国)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Disorganization of semantic brain networks in schizophrenia revealed by fMRI.2023

    • Author(s)
      Matsumoto Y, Nishida S, Hayashi R, Son S, Murakami A, Yoshikawa N, Ito H, Oishi N, Masuda N, Murai T, Friston K, Nishimoto S, *Takahashi H.
    • Journal Title

      Schizophrenia Bulletin.

      Volume: 49 Issue: 2 Pages: 498-506

    • DOI

      10.1093/schbul/sbac157

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A multi-site, multi-disorder resting-state magnetic resonance image database.2021

    • Author(s)
      Tanaka SC, Yamashita A, Yahata N, Itahashi T
    • Journal Title

      Sci Data

      Volume: 8 Issue: 1 Pages: 227-227

    • DOI

      10.1038/s41597-021-01004-8

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Natural and Artificial Intelligence: A brief introduction to the interplay between AI and neuroscience research2021

    • Author(s)
      Macpherson Tom、Churchland Anne、Sejnowski Terry、DiCarlo James、Kamitani Yukiyasu、Takahashi Hidehiko、Hikida Takatoshi
    • Journal Title

      Neural Networks

      Volume: 144 Pages: 603-613

    • DOI

      10.1016/j.neunet.2021.09.018

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Three-Dimensional Convolutional Autoencoder Extracts Features of Structural Brain Images With a “Diagnostic Label-Free” Approach: Application to Schizophrenia Datasets2021

    • Author(s)
      Yamaguchi Hiroyuki、Hashimoto Yuki、Sugihara Genichi、Miyata Jun、Murai Toshiya、Takahashi Hidehiko、Honda Manabu、Hishimoto Akitoyo、Yamashita Yuichi
    • Journal Title

      Frontiers in Neuroscience

      Volume: 15 Pages: 652987-652987

    • DOI

      10.3389/fnins.2021.652987

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Common Brain Networks Between Major Depressive-Disorder Diagnosis and Symptoms of Depression That Are Validated for Independent Cohorts2021

    • Author(s)
      Yamashita Ayumu、et al、Harada Kenichiro、Matsuo Koji、Tanaka Saori C.、Kawato Mitsuo、Kasai Kiyoto、Kato Nobumasa、Takahashi Hidehiko、Okamoto Yasumasa、Yamashita Okito、Imamizu Hiroshi
    • Journal Title

      Frontiers in Psychiatry

      Volume: 12

    • DOI

      10.3389/fpsyt.2021.667881

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cognition and interpersonal coordination of patients with schizophrenia who have sports habits2020

    • Author(s)
      Fujii Keisuke、Yoshihara Yujiro、Matsumoto Yukiko、Tose Keima、Takeuchi Hideaki、Isobe Masanori、Mizuta Hiroto、Maniwa Daisuke、Okamura Takehiko、Murai Toshiya、Kawahara Yoshinobu、Takahashi Hidehiko
    • Journal Title

      PLOS ONE

      Volume: 15 Issue: 11 Pages: e0241863-e0241863

    • DOI

      10.1371/journal.pone.0241863

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Atypical spatial frequency dependence of visual metacognition among schizophrenia patients2020

    • Author(s)
      Koizumi Ai、Hori Tomoki、Maniscalco Brian、Hayase Makoto、Mishima Ryou、Kawashima Takahiko、Miyata Jun、Aso Toshihiko、Lau Hakwan、Takahashi Hidehiko、Amano Kaoru
    • Journal Title

      NeuroImage: Clinical

      Volume: 27 Pages: 102296-102296

    • DOI

      10.1016/j.nicl.2020.102296

    • NAID

      120006949375

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Overlapping but Asymmetrical Relationships Between Schizophrenia and Autism Revealed by Brain Connectivity.2020

    • Author(s)
      Yujiro Yoshihara, Giuseppe Lisi, Noriaki Yahata, Junya Fujino, Yukiko Matsumoto, Jun Miyata, Gen-Ichi Sugihara, Shin-Ichi Urayama, Manabu Kubota et al.
    • Journal Title

      Schizophrenia Bulletin

      Volume: 4 Issue: 5 Pages: 1210-1218

    • DOI

      10.1093/schbul/sbaa021

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 脳画像と人工知能技術を統合失調症研究に活かす2022

    • Author(s)
      高橋英彦
    • Organizer
      第48回神経内分泌学会学術集会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 統合失調症の中核症状を可視化する2022

    • Author(s)
      高橋英彦
    • Organizer
      第12回社会神経科学研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 脳画像から統合失調症の早期死亡を考える2021

    • Author(s)
      髙橋 英彦
    • Organizer
      第43回 日本生物学的精神医学会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] AI技術を用いたニューロフィードバックの精神疾患への応用2021

    • Author(s)
      髙橋 英彦
    • Organizer
      第6回 CEPD研究会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Interface between AI and schizophrenia research2020

    • Author(s)
      Hidehiko Takahashi
    • Organizer
      日本神経科学会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Interface between AI and schizophrenia research2020

    • Author(s)
      Hidehiko Takahashi
    • Organizer
      International Symposium on Artificial Intelligence and Brain Science
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2020-08-03   Modified: 2024-01-30  

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