Communication between brains by synchronization of neural oscillations

• Project/Area Number: 18H03502
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 90030:Cognitive science-related
• Research Institution: Kyoto University
• Principal Investigator: Mizuhara Hiroaki 京都大学, 情報学研究科, 講師 (30392137)
• Co-Investigator(Kenkyū-buntansha): 佐藤 直行 公立はこだて未来大学, システム情報科学部, 教授 (70312668)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000); Fiscal Year 2020: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2019: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000); Fiscal Year 2018: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
• Keywords: コミュニケーション / 脳波 / 人工知能 / シンクロ / 音声理解 / 脳計測 / 音声知覚 / 自然言語処理

Outline of Final Research Achievements

Oscillatory synchronization of electrical signals between cortical regions has been proposed to play a role in the information transfer across cortical regions in the brain. In this study, we examined the synchronization of speech rhythms and EEGs from the viewpoint that the oscillatory synchronization is a common principle not only in the information transfer between cortical regions in the brain, but also in the information transfer across the brain, that is, in communication. To detect qualitative changes in communication, we evaluated the comprehension of the participants using natural language processing technology based on the latest neural network models. The results support the idea that oscillatory synchronization can describe the information transfer between brains.

Academic Significance and Societal Importance of the Research Achievements

振動的信号のシンクロ現象により，脳内のみならず，脳をまたぐ情報伝達が実現されていることを示すことは，脳の異なるスケールにおける情報伝達のメカニズムを，統一的な原理で記述可能な枠組みを提出することとなる．このことは，脳の情報処理メカニズムに基づいた新たな情報伝達様式の提案につながる可能性を秘めている．また，ニューラルネットワークモデルによる自然言語処理技術により，コミュニケーションの理解度を定量測定する方法は，本研究と同様のコミュニケーションを対象とした心理学実験のみならず，一般のコミュニケーションの質を評価するツールとしても有用である．

Research Products

• [Int'l Joint Research] University of Glasgow(英国)
• [Int'l Joint Research] Charite Universitatsmedizin(ドイツ)
• [Int'l Joint Research] グラスゴー大学(英国)
• [Journal Article] The Role of Temporal Contingency and Integrity of Visual Inputs in the Sense of Agency: A Psychophysical Study (2021)
  • Author(s): Mizuhara Hiroaki、Uhlhaas Peter
  • Journal Title: Frontiers in Psychology Volume: 12 Pages: 635202-635202
  • DOI: 10.3389/fpsyg.2021.635202
  • NAID: 120007033614
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Frequency-dependent cortical interactions during semantic processing: an electrocorticogram cross-spectrum analysis using a semantic space model (2021)
  • Author(s): Sato Naoyuki、Matsumoto Riki、Shimotake Akihiro、Matsuhashi Masao、Otani Mayumi、Kikuchi Takayuki、Kunieda Takeharu、Mizuhara Hiroaki、Miyamoto Susumu、Takahashi Ryosuke、Ikeda Akio
  • Journal Title: Cerebral Cortex Volume: -
  • Peer Reviewed / Open Access
• [Journal Article] Successful encoding during natural reading is associated with fixation-related potentials and large-scale network deactivation (2018)
  • Author(s): Nayouki Sato, Hiroaki Mizuhara
  • Journal Title: eNeuro Volume: 5(5) Issue: 5 Pages: 1-12
  • DOI: 10.1523/eneuro.0122-18.2018
  • Peer Reviewed / Open Access
• [Presentation] The impact of predictions and sensory input on the sense of agency: Development of a new psychophysical paradigm (2019)
  • Author(s): Hiroaki Mizuhara, Peter Uhlhaas
  • Organizer: EuroCogSci2019
  • Int'l Joint Research
• [Presentation] Predictability of electrocorticogram coherence using distributed semantic representation (2019)
  • Author(s): Naoyuki Sato, Riki Matsumoto, Akihiro Shimotake, Masao Matsuhashi, Mayumi Otani, Takayuki Kikuchi, Takeharu Kunieda, Hiroaki Mizuhara, Ryosuke Takahashi, Akio Ikeda
  • Organizer: Annual meeting of Society for Neuroscience 2019
  • Int'l Joint Research
• [Presentation] Neural Oscillations Are a Common Mechanism to Explain Multiscale Communication within/Between the Brains (2019)
  • Author(s): Hiroaki Mizuhara
  • Organizer: NOLTA2019
  • Int'l Joint Research
• [Book] 有斐閣 現代心理学辞典 (2021)
  • Author(s): 子安 増生、丹野 義彦、箱田 裕司
  • Total Pages: 1002
  • Publisher: 有斐閣
  • ISBN: 9784641002661