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Analysis of dynamic neuronal assemblies for memory processes of stimulus and temporal events

Research Project

Project/Area Number 09610076
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 実験系心理学
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

SAKURAI Yoshio  Kyoto University, Psychology, Professor, 文学研究科, 教授 (60153962)

Co-Investigator(Kenkyū-buntansha) 櫻井 芳雄  京都大学, 文学研究科, 教授 (60153962)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1999: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1998: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1997: ¥1,500,000 (Direct Cost: ¥1,500,000)
Keywordstemporal information / neuronal circuit / neuron / cell-assembly / memory / rat / monkey / サル / セルアセンブリ / 海馬 / 相互相関解析 / ニユーロン / 相互相関
Research Abstract

The present research investigated if the cell assembly, i.e., an ensemble population of neurons with flexible functional connections, is the basic neuronal code for information processes of memory in the brain. The main properties indicating the reality of cell-assembly coding are neurons overlapping among different assemblies and connection dynamics within and among the assemblies. The former can be detected as multiple functions of individual neurons in processing different kinds of information. Individual neurons appear to be involved in multiple information-processes. The latter can be detected as changes of functional synaptic connections in processing different kinds of information. Correlations of activity among some of the recorded neurons appear to change in multiple information-processes. The present experiments compared several different memory processes (tasks), including processings of stimulus and temporal events and searched for the two main properties. The first experim … More ent used rats as subjects and compared memory processes of stimulus (stimulus discrimination) and its presented duration (duration discrimination). Multineuronal activities from the hippocampal areas were recorded and analyzed when the rats were performing the both tasks. The second experiment used monkeys as subjects and compared short-term retention processes of memory for stimulus (delayed matching-to-sample of color) and its presented duration (delayed matching-to-sample of duration). Multineuronal activities from the prefrontal cortical areas were recorded and analyzed when the monkeys were performing the both tasks. By analyzing the individual neuronal activities and their activity correlations with each others, all theses experiments are demonstrating the two main properties of cell-assembly coding in processings of stimulus and temporal events. Also, the experiments are suggesting some different features of cell-assembly coding between the processings of stimulus and temporal events. Less

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (39 results)

All Other

All Publications (39 results)

  • [Publications] 櫻井芳雄: "多細胞同時記録実験の必要性と方法"神経回路学会誌. (印刷中). (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 櫻井芳雄: "記憶情報をコードする動的な神経回路"脳の科学. 22. 283-288 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 櫻井芳雄: "ニューロンから心へ"Computer Today. 95. 9-17 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Sakurai,Y.: "Elemental, configural, and sepuential memory processes in the rat can……"Psychobiology. 27. 486-490 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Sakurai,Y.: "How do cell assemblies encode information in the brain?"Nature science and Biobehavioral Reviews. 23. 785-796 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 櫻井芳雄: "マルチニューロン活動の記録法"脳21. 2. 77-84 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 櫻井芳雄: "脳の情報表現"朝倉書店(印刷中). (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 櫻井芳雄: "大脳辺縁系"ブレーン出版. 16 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Sakurai, Y.: "Necessity and methods of multi-neuronal recordings(In Japanese)"The Brain & Neuronal Networks. (In press). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Sakurai, Y.: "Dynamic neuronal assemblies encoding information of memory (In Japanese)"Brain Science. 22. 283-288 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Sakurai, Y: "From neurons to mind(In Japanese)"Computer Today. 95. 9-17 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Sakurai, Y.: "Elemental, configural, and sequential memory processes in the rat can be tested in a single situation in one day"Psychobiology. 27. 486-490 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Sakurai, Y.: "How do cell assemblies encode information in the brain?"Neuroscience and Biobehavioral Reviews. 23. 785-796 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Sakurai, Y.: "Methods for multi-neuronal recordings(In Japanese)"Brain. 21,2. 77-84 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Sakurai, Y.: "Representation of information in the brain(Book in Japanese)"(In press). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Sakurai, Y.: "Limbic systems in the brain (Book in Japanese)"16 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 櫻井芳雄: "多細胞同時記録実験の必要性と方法"神経回路学会誌. (印刷中). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 櫻井芳雄: "記憶情報をコードする動的な神経回路"脳の科学. 22. 283-288 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 櫻井芳雄: "ニューロンから心へ"Computer Today. 95. 9-17 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Sakurai Y.: "Elemental,configural,and sequential memory processes in the rat can・・・・"Psychobiology. 27. 486-490 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Sakurai Y.: "How do cell assemblies encode information in the brain?"Neuroscience and Biobehavioral Reviews. 23. 785-796 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 櫻井芳雄: "マルチニューロン活動の記録法"脳21. 2. 77-84 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 櫻井芳雄: "脳の情報表現"朝倉書店 (印刷中). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 櫻井芳雄: "大脳辺縁系"プレーン出版. 16 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Sakurai,Y.: "Elemental,configural,and sequential memory processes in the rat can..." Psychobiology. (印刷中).

    • Related Report
      1998 Annual Research Report
  • [Publications] Sakurai,Y.: "How do cell assemblies encode information in the brain?" Neuroscience and Biobehavioral Reviews. (印刷中).

    • Related Report
      1998 Annual Research Report
  • [Publications] Sakurai,Y.: "Cell-assembly coding for several information in the working brain." Proceedings of the 3rd Riken-Tamagawa International Dynamic Brain Forum. 19-19 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Sakurai,Y.: "The search for cell assemblies in the working brain." Behavioural Brain Research. 91. 1-13 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Sakurai,Y.: "Cell-assembly coding in several memory processes" Neurobiology of Learning and Memory. 70. 212-225 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 櫻井芳雄: "多数ニューロン活動の同時記録法." 脳の科学. 20. 1233-1237 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 櫻井芳雄: "ニューロンから心をさぐる" 岩波書店, 119 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Sakurai,y: "How do cell assemblies encode information in the brain ?" Neuroscience and Biobehavioral Reviews. (印刷中). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Sakurai,y: "Cell-assembly coding in several memory processes" Neurobiology of Learning and Memory. (印刷中). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Sakurai,y: "The search for cell assemblies in the working brain" Behavioural Brain Research. (印刷中). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 櫻井 芳雄: "スパイク相関解析法" 医学のあゆみ. 184. 607-612 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 櫻井 芳雄: "記憶情報処理と海馬体ニューロン活動" 臨床科学. 33. 1626-1635 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 櫻井 芳雄: "記憶情報処理と動的ニューロン回路" 物性研究. 68. 549-558 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 櫻井 芳雄: "新生理心理学" 北大路書房(印刷中), (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 櫻井 芳雄: "脳と計算論" 朝倉書店, 303 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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