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The function of the primary visual cortex in alert visual perception: Mechanisms of dynamic sparse information representation

Research Project

Project/Area Number 17K07050
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Neurophysiology / General neuroscience
Research InstitutionThe University of Electro-Communications

Principal Investigator

TANAKA SHIGERU  電気通信大学, 脳・医工学研究センター, 特任教授 (70281706)

Co-Investigator(Kenkyū-buntansha) 宮下 真信  沼津工業高等専門学校, 制御情報工学科, 教授 (20443038)
Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords視覚情報表現 / 自己組織化 / スパイキングニューロンモデル / 動的デコーディング / スパースコーディング / 覚醒レベル / 注意 / 視覚野 / ニューロン / 空間周波数 / 星状膠細胞 / 皮質内側方結合 / 特徴抽出 / ダイナミックニューロンモデル / 視覚特徴量分散表現 / デコーディング / 三者間シナプス / 神経修飾因子 / 空間周波数特性 / 神経科学 / 脳・神経 / モデル化 / 生体生命情報学
Outline of Final Research Achievements

Using geniculo-cortical inputs formed by activity-dependent self-organization, we constructed a spiking neuron network and performed simulations of dynamic neuronal responses to visual stimuli. As a result, it was confirmed that model visual cortex elicited spikes sparsely at each moment. Then we tried to decode spatio-temporal stimulus patterns from neuronal spike patterns, using receptive fields as basis functions. The decoding almost successfully reproduced drifting grating patterns used as visual stimuli. This suggests that the self-organized visual cortex can represent not only stationary visual stimuli but also dynamic ones, which can be decodable.

Academic Significance and Societal Importance of the Research Achievements

従来のニューラルネットワークによるデコーディングは、静的な視覚パターンにほぼ限定されていたが、自己組織化によって構成されたスパイキングニューロンからなる視覚野は、動的な視覚刺激についてもデコード可能な形でスパイク放電の時空間パターンとして表現可能であることを示した。このことは、脳において時々刻々と変化する刺激パターンがどのように表現され、読みだされているのかを解明するためのヒントを与える。また、動的刺激をデコードするためのスパースコーディング技術の発展に寄与することが期待される。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (10 results)

All 2020 2019 2018 2017

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (9 results) (of which Int'l Joint Research: 5 results,  Invited: 1 results)

  • [Journal Article] Development and Reorganization of Orientation Representation in the Cat Visual Cortex: Experience-Dependent Synaptic Rewiring in Early Life2020

    • Author(s)
      Shigeru Tanaka, Masanobu Miyashita, Nodoka Wakabayashi, Kazunori O’Hashi, Toshiki Tani and Jerome Ribot
    • Journal Title

      frontiers in Neuroinformatics

      Volume: 14, 41 Pages: 1-26

    • DOI

      10.3389/fninf.2020.00041

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] A spiking neural network model of the contrast-dependent surround suppression of neuronal responses in the primary visual cortex.2020

    • Author(s)
      Miyashita M., Tanaka S.
    • Organizer
      43回日本神経科学大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] A computational study of differences in the response properties of visual cortical neurons between cats and rodents2019

    • Author(s)
      Masanobu Miyashita, Shigeru Tanaka
    • Organizer
      日本神経科学大会2019
    • Related Report
      2019 Research-status Report
  • [Presentation] A theoretical study of differences in the contrast and length tuning of visual cortical neurons between cats and rodents2019

    • Author(s)
      Masanobu Miyashita, Shigeru Tanaka
    • Organizer
      Society for Neuroscience Meeting 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] A mathematical model predicts functional properties of rodent visual cortical neurons2018

    • Author(s)
      宮下真信・田中繁
    • Organizer
      日本神経科学学会
    • Related Report
      2018 Research-status Report
  • [Presentation] A spiking network model of the rodent visual cortex for the understanding of what visual information is represented2018

    • Author(s)
      Masanobu Miyashita, Shigeru Tanaka
    • Organizer
      Society for Neuroscience Meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Species differences in the functional architecture of primary visual cortex between cats and rodents2017

    • Author(s)
      Shigeru Tanaka, Masanobu Miyashita
    • Organizer
      The 4th Annual Meeting of the Society for Bioacoustics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Neural mechanisms of auditory continuity illusion2017

    • Author(s)
      Masanobu Miyashita, Shigeru Tanaka
    • Organizer
      The 4th Annual Meeting of the Society for Bioacoustics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] A theoretical study of cortical neural dynamics for the generation of auditory continuity illusion2017

    • Author(s)
      Masanobu Miyashita, Shigeru Tanaka
    • Organizer
      Society for Neuroscience Meeting 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] A computational model for the generation of auditory continuity illusion2017

    • Author(s)
      Masanobu Miyashita, Shigeru Tanaka
    • Organizer
      日本神経科学大会2017
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2022-01-27  

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