• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Local organization of spatial frequency tuning dynamics in the V1

Research Project

Project/Area Number 16K01965
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Brain biometrics
Research InstitutionKyoto Sangyo University

Principal Investigator

TANAKA HIROKI  京都産業大学, 情報理工学部, 准教授 (40335386)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
KeywordsV1野 / 空間周波数 / 脳視覚情報処理 / コラム構造 / チューニングダイナミクス / 多点電極 / 空間周波数チューニングダイナミクス / 視覚情報処理 / 局所構造 / コラム
Outline of Final Research Achievements

Recent studies using two-photon imaging suggested that in the primary visual cortex (V1), one of the most fundamental cortical structures for visual processing, neurons with similar spatial frequency (SF) tunings are locally clustered into vertically elongated SF columns. In this study, we simultaneously recorded and analyzed SF tunings of multiple neurons located within a column. We found that the SF signals conveyed by columns are shifted from low to high and become more diverse with response time. This sequential processing by columns is ubiquitously observed across V1. We also found that the tuning dynamics are already present at the input cortical layer in V1.

Academic Significance and Societal Importance of the Research Achievements

コラムは大脳皮質における情報処理の基本単位と考えられており、その動作のダイナミクスの解明は脳の情報処理を理解する上で重要である。これまで、単一細胞レベルでの視覚情報伝達ダイナミクスの研究は多く行われてきたが、コラムを単位としたダイナミクスの研究はあまり行われていない。本研究は、細胞集団の空間周波数応答がどのように時間変化するのかをコラム単位で詳細に調べ、コラムレベルでの視覚情報処理ダイナミクスを特徴づけることにより、脳視覚情報処理に新たな知見を加えた。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (9 results)

All 2019 2018 2017 2016

All Presentation (9 results) (of which Int'l Joint Research: 4 results)

  • [Presentation] 畳み込みニューラルネットワークの判断根拠を可視化する手法の評価2019

    • Author(s)
      森 澪希・田中宏喜
    • Organizer
      ニューロコンピューティング研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Contrast-dependent spatial frequency tuning dynamics in the cat area 17/182019

    • Author(s)
      Hiroki Tanaka
    • Organizer
      Society for neuroscience
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dynamics of contrast-dependent spatial frequency tunings in the cat V12019

    • Author(s)
      田中宏喜
    • Organizer
      日本神経科学学会
    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Local organization of spatial frequency tuning dynamics and its relation to population information transmission in the cat primary visual cortex2018

    • Author(s)
      田中宏喜、大澤五住
    • Organizer
      日本神経科学学会
    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Local organization of spatial frequency tuning dynamics in the cat primary visual cortex2018

    • Author(s)
      Tanaka H and Ohzawa I
    • Organizer
      Society for Neuroscience
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of loose neuronal correlation on response timing and amplitude of cat V1 neurons to movies of rapidly changing sinusoidal gratings.2017

    • Author(s)
      本谷健太、井上真一、田中宏喜
    • Organizer
      日本神経科学学会
    • Related Report
      2017 Research-status Report
  • [Presentation] V1野集団活動によるフラッシュサイン波ムービー刺激にたいする細胞応答タイミングの予測2017

    • Author(s)
      本谷健太、井上真一、田中宏喜
    • Organizer
      視覚科学フォーラム
    • Related Report
      2017 Research-status Report
  • [Presentation] V1野空間周波数チューニングのダイナミクスとその構造2016

    • Author(s)
      清水駿、井上真一、田中宏喜
    • Organizer
      ニューロコンピューティング研究会
    • Place of Presentation
      大阪電気通信大学(大阪府寝屋川市)
    • Year and Date
      2016-10-22
    • Related Report
      2016 Research-status Report
  • [Presentation] ネコ第一次視覚野の局所領域における空間周波数チューニングダイナミクスの多様性2016

    • Author(s)
      田中宏喜、大澤五住
    • Organizer
      日本神経科学学会
    • Place of Presentation
      パシフィコ横浜(神奈川県横浜市)
    • Year and Date
      2016-07-20
    • Related Report
      2016 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2021-02-19  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi