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Generation of Intermediate Representation of Shape based on Figure-Ground Segregation

Research Project

Project/Area Number 17H01754
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Cognitive science
Research InstitutionUniversity of Tsukuba

Principal Investigator

Sakai Ko  筑波大学, システム情報系, 教授 (80281666)

Co-Investigator(Kenkyū-buntansha) 田村 弘  大阪大学, 生命機能研究科, 准教授 (80304038)
山根 ゆか子  大阪大学, 生命機能研究科, 特別研究員(RPD) (70565043)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2019: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2018: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2017: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
Keywords認知科学 / 神経科学 / 実験系心理学 / 情報工学 / 視覚科学
Outline of Final Research Achievements

The function of vision is to understand where and what are objects. The images of the outside world are projected onto the retina. The visual cortices need to determine which regions in the retinal image are what objects, which is so called figure-ground (FG) segregation. If the brain failed to correctly segregate figure from ground, it directly led to the incorrect recognition of the object. The present study investigated the cortical mechanisms that perform the construction of object shapes by FG segregation. The study suggested that the perception of shape is constructed through multiple steps, and that the intermediate-level representation of object shape is constructed in the cortical area V4. Moreover, the study suggested that a few tens of neurons represent object shape in a distributed manner.

Academic Significance and Societal Importance of the Research Achievements

日常的に見る光景は千差万別であり,移動とともに時々刻々と変化する。しかし私達は,初めて見る光景や物体であっても,図地分離に失敗して形状を誤って知覚することは滅多にない。これは,皮質における図地分離の頑健性と秀逸性を示している。視覚皮質のメカニズムは,今日のAIブームの立役者である Deep Learning として応用され,画期的な成果を出している。しかし,脳が実際にどのような計算をしているのかは,まだ殆ど判っておらず,未知の原理・数学体系があるものと考えられている。本研究で明らかにした中間表現の形成・群表現は,脳の計算原理の一端を明らかにしたものである。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (47 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (4 results) Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (37 results) (of which Int'l Joint Research: 12 results,  Invited: 4 results) Remarks (1 results)

  • [Int'l Joint Research] Johns Hopkins University(米国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Norwegian University of Life Sciences(ノルウェー)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] University of Edinburgh/Inst. Perception, Action and Behavior(英国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Johns Hopkins University/Mind/Brain Institute(米国)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Perception and Saccades during Figure-Ground Segregation and Border-Ownership Discrimination in Natural Contours2020

    • Author(s)
      WAGATSUMA Nobuhiko、URABE Mika、SAKAI Ko
    • Journal Title

      IEICE Transactions on Information and Systems

      Volume: E103.D Issue: 5 Pages: 1126-1134

    • DOI

      10.1587/transinf.2019EDP7020

    • NAID

      130007839072

    • ISSN
      0916-8532, 1745-1361
    • Year and Date
      2020-05-01
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spatial Structure of Receptive Fields and Surrounds in Response to Local Figure-Ground Configuration in Monkey V4.2019

    • Author(s)
      K. Kimura, Y. Yamane, H. Tamura and K. Sakai
    • Journal Title

      Austrarian Journal of Intelligent Information Processing Systems

      Volume: 17 Pages: 7-13

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Invariance to low-level features and partial transfer over space in the tilt aftereffects evoked by symmetrical patterns2019

    • Author(s)
      Sakata Yui、Kurematsu Ken、Wagatsuma Nobuhiko、Sakai Ko
    • Journal Title

      Journal of the Optical Society of America A

      Volume: 36 Issue: 2 Pages: 283-291

    • DOI

      10.1364/josaa.36.000283

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Interactions Elicited by the Contradiction Between Figure Direction Discrimination and Figure-Ground Segregation2018

    • Author(s)
      Wagatsuma Nobuhiko、Urabe Mika、Sakai Ko
    • Journal Title

      Frontiers in Psychology

      Volume: 9 Pages: 1681-1681

    • DOI

      10.3389/fpsyg.2018.01681

    • NAID

      120007133794

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Analysis of real-world illumination -Lighting changes perception of specularity-2018

    • Author(s)
      Y. Mori and K. Sakai
    • Journal Title

      Journal of Science and Technology in Lighting

      Volume: 42

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] Temporal development and dimensionality of figure-ground signals in monkey V4.2020

    • Author(s)
      A. Kodama, and K. Sakai
    • Organizer
      The 8th RIEC International Symposium on Brain Functions and Brain Computer
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 感情によるユニーク色知覚の変化2020

    • Author(s)
      柴田紀代, 酒井 宏
    • Organizer
      映像情報メディア学会 ヒューマンインフォメーション研究会 3月
    • Related Report
      2019 Annual Research Report
  • [Presentation] 注意を引き付ける高次テクスチャ -質感のポップアウト-2020

    • Author(s)
      米岡賢人, 我妻伸彦, 酒井 宏
    • Organizer
      映像情報メディア学会 ヒューマンインフォメーション研究会 3月
    • Related Report
      2019 Annual Research Report
  • [Presentation] Border Ownership選択性を示すサルV2細胞の機能受容野推定2020

    • Author(s)
      田中一直, 酒井 宏
    • Organizer
      電子情報通信学会 ニューロコンピューティング研究会 3月
    • Related Report
      2019 Annual Research Report
  • [Presentation] 自然画像に対するサルV4野の神経反応が示す次元の推定2020

    • Author(s)
      樹神 篤, 酒井 宏
    • Organizer
      電子情報通信学会 ニューロコンピューティング研究会 3月
    • Related Report
      2019 Annual Research Report
  • [Presentation] 図地分離に対するサルV4神経細胞の応答と知覚の一貫性 -電気生理実験,知覚心理実験および線形受容野カーネルモデルによる解析-2020

    • Author(s)
      宍倉基文, 鈴木一史, 山根ゆか子, 田村 弘, 酒井 宏
    • Organizer
      電子情報通信学会 ニューロコンピューティング研究会 3月
    • Related Report
      2019 Annual Research Report
  • [Presentation] Perceptual consistency of figure-ground segregation in natural images --- Perception, neural activity, and dynamic model.2020

    • Author(s)
      K. Suzuki, M. Shishikura, and K. Sakai
    • Organizer
      令和1年度電気通信研究所共同プロジェクト研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Figure-Ground Coding in Monkey V4 --- Receptive Field Structure and Population Coding.2020

    • Author(s)
      K. Sakai, K. Kimura, Y. Yamane, and H. Tamura
    • Organizer
      Annual Meeting, Japanese Neuroscience Society (Neuro 2019)
    • Related Report
      2019 Annual Research Report
  • [Presentation] Receptive Field Structure of Border Ownership-selective Cells in Response to Direction of Figure.2019

    • Author(s)
      K. Sakai, K. Tanaka, R. von der Heydt, and E. Niebur
    • Organizer
      Computational Neuroscience Meeting (CNS 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Figure-Ground Detection by a Population of Neurons with a Variety of Receptive-Field Structures in Monkey V4.2019

    • Author(s)
      K. Sakai, K. Kimura, Y. Yamane, and H. Tamura
    • Organizer
      Computational Neuroscience Meeting (CNS 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Emotion modulates multiple colors for a short duration.2019

    • Author(s)
      Noriyo Shibata, Ko Sakai
    • Organizer
      Asia Pacific Conference on Vision (APCV 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Antagonistic receptive-field structure of V4 neurons detects local figure-ground organization in natural image patches.2019

    • Author(s)
      Kouji Kimura, Yukako Yamane, Hiroshi Tamura, Ko Sakai
    • Organizer
      Asia Pacific Conference on Vision (APCV 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Responses to figure-ground organization in natural image patches by monkey V4 neurons.2019

    • Author(s)
      K. Sakai, K. Kimura, M. Shishikura, Y. Yamane, H. Tamura
    • Organizer
      Society of Neuroscience, Annual Meeting (SfN 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Spatial Structure of Receptive Fields and Surrounds in Response to Local Figure-Ground Configuration in Monkey V42019

    • Author(s)
      K. Kimura, Y. Yamane, H. Tamura and K. Sakai
    • Organizer
      International Conference on Neural Information Processing (ICONIP 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Temporal Information for Figure-Ground Determination in Monkey V4.2019

    • Author(s)
      Baoxuan Liu, Nobuhiko Wagatsuma, Yukako Yamane, Hiroshi Tamura, Ko Sakai
    • Organizer
      日本神経回路学会,全国大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] サルV4図地選好性細胞の受容野構造2019

    • Author(s)
      木村 耕治, 山根 ゆか子, 田村 弘, 酒井 宏
    • Organizer
      電子情報通信学会ニューロコンピューティング研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Receptive field structure of border ownership-selective cells in response to natural images.2019

    • Author(s)
      酒井 宏
    • Organizer
      平成30年度電気通信研究所共同プロジェクト研究発表会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 覚醒感情による色知覚の変調2019

    • Author(s)
      柴田紀代,酒井 宏
    • Organizer
      日本視覚学会 冬季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 自然光景における図地分離の局所的手掛かり2019

    • Author(s)
      碓氷隼也,酒井 宏
    • Organizer
      日本視覚学会 冬季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 物体像選択的ユニット削除はCNN分類性能を向上させ,非選択的ユニット削除は低下させる2019

    • Author(s)
      神田悠汰,佐々木耕太,大澤五住,田村 弘
    • Organizer
      日本視覚学会 2019年 冬季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 視空間的注意コントロール条件での網膜偏心度と知覚潜時の関係2019

    • Author(s)
      藤本紗也加、田村 弘
    • Organizer
      日本視覚学会 2019年 冬季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 奥行きと方向の異なる対象間での眼球運動において観察される三相の運動軌跡2019

    • Author(s)
      中野騰久,田村 弘
    • Organizer
      日本視覚学会 2019年 冬季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] サル視覚皮質と深層畳み込みニューラルネットワークが獲得するsaliency mapモデルの画像情報表現2019

    • Author(s)
      我妻伸彦,日高章理,田村 弘
    • Organizer
      日本視覚学会 2019年 冬季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] L1ロジスティック回帰を用いた視覚皮質神経細胞集団の物体表面画像に対する識別性能の評価2019

    • Author(s)
      小谷梨奈、市川寛子、五十嵐康彦、本武陽一、岡田真人、田村弘
    • Organizer
      電子情報通信学会 ニューロコンピューティング研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] The neuronal activity of macaque visual cortices during free viewing.2019

    • Author(s)
      Y. Yamane J. Ito, Joana Cristian, P.E. Maldonado, H. Tamura, I. Fujita, K. Doya, S. Grun
    • Organizer
      Mechanism of brain and mind the winter workshop 2019
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cortical Representation of Figure and Shape ---Towards understanding the construction of an object in the visual system2018

    • Author(s)
      Ko Sakai
    • Organizer
      Centre for Integrative Neuroplasticity, Dept. of Biosciences, University of Oslo
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Cortical Representation of Figure and Shape2018

    • Author(s)
      Ko Sakai
    • Organizer
      Faculty of Science and Technology, Norwegian University of Life Sciences
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Inferring fixated objects in free viewing from parallel neuronal spiking activities in macaque monkeys2018

    • Author(s)
      Yukako Yamane, Junji Ito, Cristian Joana, Pedro E. Maldonado, Hiroshi Tamura, Ichiro Fujita, Kenji Doya, Sonja Grun
    • Organizer
      Neuro2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] Representation of fixated objects by multiple single unit activity in visual cortices of freely viewing macaque monkeys2018

    • Author(s)
      Yukako Yamane, Junji Ito, Cristian Joana, Pedro E. Maldonado, Hiroshi Tamura, Ichiro Fujita, Kenji Doya, Sonja Grun
    • Organizer
      FENS2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Analysis of real-world illumination -Lighting changes perception of specularity-2018

    • Author(s)
      Y. Mori and K. Sakai
    • Organizer
      Lux Pacifica, Eighth, 2018
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Analysis of real-world illumination2018

    • Author(s)
      Y. Mori and K. Sakai
    • Organizer
      平成29年度電気通信研究所共同プロジェクト研究発表会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 対称軸への順応 ---形状の抑制作用2018

    • Author(s)
      坂田結衣,酒井 宏
    • Organizer
      日本視覚学会 冬季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 周辺環境で変調する光沢感知覚2018

    • Author(s)
      森 唯人,酒井 宏
    • Organizer
      日本視覚学会 冬季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Intermediate Representation of Figure and Shape in the Visual Cortex2017

    • Author(s)
      K. Sakai
    • Organizer
      Institute for Theoretical Physics, University of Bremen, Seminar
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Cortical Representation of Figure and Shape2017

    • Author(s)
      K. Sakai
    • Organizer
      Institute of Perception, Action and Behavior, University of Edinburgh, IPAB Seminar,
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 光沢感を生起する照明の解析2017

    • Author(s)
      森 唯人, 酒井 宏
    • Organizer
      質感のつどい 第3回公開フォーラム
    • Related Report
      2017 Annual Research Report
  • [Presentation] 対称軸への順応---形状とパターンの相互作用2017

    • Author(s)
      坂田結衣,酒井 宏
    • Organizer
      日本神経回路学会 全国大会
    • Related Report
      2017 Annual Research Report
  • [Remarks] 研究テーマ概要のご紹介

    • URL

      http://www.cvs.cs.tsukuba.ac.jp/research.html

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report 2017 Annual Research Report

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Published: 2017-04-28   Modified: 2021-02-19  

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