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Exploration of brain activation patterns as memory engrams

Research Project

Project/Area Number 15K12777
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Brain biometrics
Research InstitutionKochi University of Technology

Principal Investigator

Nakahara Kiyoshi  高知工科大学, 情報学群, 教授 (50372363)

Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsエピソード記憶 / 知覚学習 / 機能的結合 / 連合記憶 / 脳活動パターン / 安静時脳機能結合 / 機能的磁気共鳴画像法 / 皮質脳波 / 内側側頭葉 / 自発的脳活動 / グラフ理論 / fMRI / 時間認知
Outline of Final Research Achievements

In this project, we conducted two fMRI studies as follows.
First, we investigated resting-state fMRI before and after a task-fMRI session involving visual perceptual training. We revealed that resting-state functional connectivity with the MT+ was significantly increased after training in widespread cortical regions including the bilateral sensorimotor and temporal cortices.
Second, we investigated time-varying functional connectivity patterns during memory encoding. We found that increased integration of the subcortical, default-mode, salience, and visual subnetworks with other subnetworks is a hallmark of successful memory encoding.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (9 results)

All 2018 2017 2016

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

  • [Journal Article] Visual perceptual training reconfigures post-task resting-state functional connectivity with a feature-representation region2018

    • Author(s)
      Sarabi Mitra Taghizadeh、Aoki Ryuta、Tsumura Kaho、Keerativittayayut Ruedeerat、Jimura Koji、Nakahara Kiyoshi
    • Journal Title

      PLOS ONE

      Volume: 13 Issue: 5 Pages: 0196866-0196866

    • DOI

      10.1371/journal.pone.0196866

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Dynamic functional connectivity during incidental memory encoding: a functional magnetic resonance imaging (fMRI) study2017

    • Author(s)
      R. Keerativittatayut, R. Aoki, and K. Nakahara
    • Organizer
      Society for Neuroscience
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Perceptual learning is predicted by enhanced resting-state functional connectivity after training.2017

    • Author(s)
      M. Taghizadeh Sarabi, R. Aoki, K. Tsumura, R. Keerativittayayut, K. Jimura, and K. Nakahara.
    • Organizer
      Society for Neuroscience
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Functionally coupled intrinsic fluctuations in fMRI signals predict subsequent memory performance2017

    • Author(s)
      R. Keerativittatayut, R. Aoki, K. Nakahara
    • Organizer
      Organization for Human Brain Mapping
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Enhanced Connectivity of Post-task Resting State after Perceptual Learning: an fMRI Study.2017

    • Author(s)
      M. Taghizadeh Sarabi, R. Aoki, K. Tsumura, R. Keerativittayayut, K. Nakahara, K. Jimura.
    • Organizer
      Organization for Human Brain Mapping
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Relationships between ongoing activity fluctuation in the medial temporal lobe and subsequent memory performance2016

    • Author(s)
      Ruedeerat Keerativitayayut, Ryuta Aoki, Mitra Sarabi Taghizadeh, Kiyoshi Nakahara
    • Organizer
      Neuroscience 2016
    • Place of Presentation
      San Diego, USA
    • Year and Date
      2016-11-12
    • Related Report
      2015 Research-status Report
  • [Presentation] Feasibility of multiband EPI for detection of brain activation in the reward system2016

    • Author(s)
      Mitra Sarabi Taghizadeh, Ruedeerat Keerativitayayut, Kiyoshi Nakahara, Ryuta Aoki
    • Organizer
      Neuroscience 2016
    • Place of Presentation
      San Diego, USA
    • Year and Date
      2016-11-12
    • Related Report
      2015 Research-status Report
  • [Presentation] Relationships between ongoing activity fluctuation in the medial temporal lobe and subsequent memory performance.2016

    • Author(s)
      R. Keerativittayayut, R. Aoki, M. Taghizadeh Sarabi, K. Nakahara
    • Organizer
      Neuroscience 2016
    • Place of Presentation
      San Diego, USA
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Feasibility of multiband EPI for detection of brain activation in the reward system.2016

    • Author(s)
      M. Taghizadeh Sarabi, R. Aoki, R. Keerativittayayut, K. Nakahara
    • Organizer
      Neuroscience 2016
    • Place of Presentation
      San Diego, USA
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2015-04-16   Modified: 2019-03-29  

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