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2008 Fiscal Year Annual Research Report

大脳認知記憶ダイナミクスの研究 : 大域ネットワークと局所神経回路の機能の解明

Research Project

Project/Area Number 19002010
Research InstitutionThe University of Tokyo

Principal Investigator

宮下 保司  The University of Tokyo, 大学院・医学系研究科, 教授 (40114673)

Keywords神経科学 / 磁気共鳴機能画像 / 記憶 / 大脳皮質 / 画像
Research Abstract

サル用磁気共鳴画像装置における8チャネルパラレルイメージングシステムのテストを完了し動物を被験者とした計測の準備を進めている。サル用8チャネルRFコイルが納入されたが、感度調整や時間的安定性の最適化が必要であることも判明した。サルを被験者とするして大脳全体の大域的活動を要求する認知課題としての近時記憶課題および注意シフト課題の解析は順調に進捗している。サルのトレーニングは順調に完了し、前者の近時記憶課題においては1頭目のfMRI計測を終了し、前頭葉弓状溝下行枝や前頭補足眼野等幾つかの部位に記憶負荷に応じた活動の変化を見出した。現在2頭目の計測を進めている。後者の注意シフト課題では、頭頂葉7a野ニューロン群の活動がシフト時に次元に対して非対称的活動を起こすこと、更にこのニューロン活動がその4-5秒後におこる行動の成否を予測できることを発見し、論文発表した(Kamigaki et.al., Neuron 2009)。ヒトを被験者とした研究では、注意シフト課題、GO/NOGO課題およびSTROOP課題において大脳機能構築について新しい知見が得られた(Chikazoe et.al., Cerebral Cortex 2009 ; Jilnura et.al., Eur, J. Neurosci. in press ; Asari et.al., Cortex in press ; Morimoto et al., J. Cogn. Neurosci. 2008)。Lentivirus vectorによって大脳皮質内に遺伝子を過剰発現させる方法の開発は順調に進展しfeasibility studyを終了した。その結果、サルを用いた実験が可能であるとの結論に到達し、サル用P2実験室を作り、実験準備を進めている。

  • Research Products

    (24 results)

All 2009 2008 Other

All Journal Article (10 results) (of which Peer Reviewed: 10 results) Presentation (13 results) Remarks (1 results)

  • [Journal Article] Cognitive set reconfiguration signaled by macaque posterior parietal neurons2009

    • Author(s)
      Kamigaki, T., et.al.
    • Journal Title

      Neuron 61

      Pages: 941-951

    • Peer Reviewed
  • [Journal Article] Functional dissociation in right inferior frontal cortex during performance of go/no-go task2009

    • Author(s)
      Chikazoe, J., et.al.
    • Journal Title

      Cereb. Cortex 19

      Pages: 146-152

    • Peer Reviewed
  • [Journal Article] A critical component that activates left inferior prefrontal cortex during interference resolution2009

    • Author(s)
      Jimura, K., et.al.
    • Journal Title

      Eur. J. Neurosci (印刷中)(掲載確定)

    • Peer Reviewed
  • [Journal Article] Amygdalar enlargement associated with unique perception2009

    • Author(s)
      Asari, T., et.al.
    • Journal Title

      Cortex (印刷中)(掲載確定)

    • Peer Reviewed
  • [Journal Article] Temporal pole activity during perception of sad faces, but not happy faces, correlates with Neuroticism trait2009

    • Author(s)
      Jimura, K., et.al.
    • Journal Title

      Neurosci. Lett. 453

      Pages: 45-48

    • Peer Reviewed
  • [Journal Article] Involvement of medial prefrontal cortex in emotion during feedback Presentation2009

    • Author(s)
      Jimura, K., et.al.
    • Journal Title

      NeuroReport (印刷中)(掲載確定)

    • Peer Reviewed
  • [Journal Article] Differential superior prefrontal activity on initial versus subsequent shifts in naive subjects2008

    • Author(s)
      Konishi, S., et.al.
    • Journal Title

      Neurolmage 4

      Pages: 575-580

    • Peer Reviewed
  • [Journal Article] Toward understanding of the cortical network underlying associative memory2008

    • Author(s)
      Osada, T., et.al.
    • Journal Title

      Phil. Trans. R. B. 363

      Pages: 2187-2199

    • Peer Reviewed
  • [Journal Article] Right temporopolar activation associated with unique perception2008

    • Author(s)
      Asari, T., et.al.
    • Journal Title

      Neurolmage 41

      Pages: 145-152

    • Peer Reviewed
  • [Journal Article] On verbal/nonverbal modality dependence of left and right inferior prefrohtal activation during performance flanker interference task2008

    • Author(s)
      Morimoto, H. M., et.al.
    • Journal Title

      J. Cogn. Neurosci 20

      Pages: 2006-2014

    • Peer Reviewed
  • [Presentation] Electrolysis of an elgiloy electrode can create MRI-visible metal deposit marksat recrding sites2008

    • Author(s)
      Koyano, K.W., et.al.
    • Organizer
      The 38th annual meeting of the Society for Neuroscience
    • Place of Presentation
      Washington, DC., U.S.A.
    • Year and Date
      2008-11-19
  • [Presentation] Two close subregions in right inferior frontal gyrus associated with resnonse inhibition and negative feedback nrocessing2008

    • Author(s)
      Hirose, S., et.al.
    • Organizer
      The 38th annual meeting of the Society for Neuroscience
    • Place of Presentation
      Washington, DC., U.S.A.
    • Year and Date
      2008-11-19
  • [Presentation] Functional characterization of area 35 in the macaque perirhinal cortex durine a nair association task2008

    • Author(s)
      Fujimichi, R., et.al.
    • Organizer
      The 38th annual meeting of the Society for Neuroscience
    • Place of Presentation
      Washington, DC., U.S.A.
    • Year and Date
      2008-11-16
  • [Presentation] Cross-correlation and spectral analyses of spike trains in macaque inferotemporal cortex for different ,parts configurations within a wholeobiect2008

    • Author(s)
      Hirabayashi, T., et.al.
    • Organizer
      Asia-Pacific Conference on Vision
    • Place of Presentation
      Brisbane, Australia
    • Year and Date
      2008-07-20
  • [Presentation] Cognitive memory system : brain-wide networks and local circuits2008

    • Author(s)
      Miyashita, Y
    • Organizer
      第31回日本神経科学大会
    • Place of Presentation
      東京国際フォーラム
    • Year and Date
      2008-07-10
  • [Presentation] MRI-based in vivo detection of recording sites marked by electrolysis of an elsiloy electrode2008

    • Author(s)
      Koyano, K.W., et.al.
    • Organizer
      第31回日本神経科学大会
    • Place of Presentation
      東京国際フォーラム
    • Year and Date
      2008-07-10
  • [Presentation] Neuronal modulation in the posterior parietal cortex of monkeys performina an analog of the Wisconsin Card Sorting Test2008

    • Author(s)
      Kamigaki, T., et.al.
    • Organizer
      第31回日本神経科学大会
    • Place of Presentation
      東京国際フォーラム
    • Year and Date
      2008-07-10
  • [Presentation] Different cognitive control processes implemented by two subregions in ineferior frontal cortex during go/no-go task2008

    • Author(s)
      Chikazoe, J., et.al.
    • Organizer
      第31回日本神経科学大会
    • Place of Presentation
      東京国際フォーラム
    • Year and Date
      2008-07-10
  • [Presentation] Dynamic modulation of spike-spike coherence between macaque inferotemnoral neurons2008

    • Author(s)
      Hirabayashi, T
    • Organizer
      第31回日本神経科学大会
    • Place of Presentation
      東京国際フォーラム
    • Year and Date
      2008-07-10
  • [Presentation] Neuronal activities in area 35 of macaque of perirhinal cortex during a pair association task2008

    • Author(s)
      Fujimichi. R., et.al.
    • Organizer
      第31回日本神経科学大会
    • Place of Presentation
      東京国際フォーラム
    • Year and Date
      2008-07-10
  • [Presentation] Segregation of posterior inferior frontal gyrus and inferior frontal junction revealed modified go/no-go task2008

    • Author(s)
      Chikazoe, J., et.al.
    • Organizer
      14th Annual Meeting of the Organization for, Human Brain Mapping
    • Place of Presentation
      Melbourne, Australia
    • Year and Date
      2008-06-16
  • [Presentation] Memory and Cognitive Control in the Primate2008

    • Author(s)
      Miyashita, Y
    • Organizer
      44^<th> Meeting of the US-Japan Cooperative Medical Science
    • Place of Presentation
      Minnesota, U.S.A.
    • Year and Date
      2008-06-14
  • [Presentation] Memory circuit in the primate : Global and local2008

    • Author(s)
      Miyashita, Y
    • Organizer
      Fridtjof Nansen conference on Neural Networks and Behaviour
    • Place of Presentation
      Svalbard, Norway
    • Year and Date
      2008-06-04
  • [Remarks]

    • URL

      http://www.physiol.m.u-tokyo.acjp/

URL: 

Published: 2010-06-11   Modified: 2016-04-21  

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