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Encoding, decoding, and cortical representation of visual material properties by an ensemble of neurons

Publicly Offered Research

Project AreaUnderstanding human recognition of material properties for innovation in SHITSUKAN science and technology
Project/Area Number 16H01673
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Complex systems
Research InstitutionOsaka University

Principal Investigator

藤田 一郎  大阪大学, 生命機能研究科, 教授 (60181351)

Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
Fiscal Year 2017: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2016: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Keywords2光子イメージング / 一次視覚野 / 符号化モデル / 運動エネルギーモデル / 機能構築 / テクスチャー / 質感 / 空間周波数 / 神経科学 / 生理学 / PS統計量 / 霊長類 / 大脳皮質 / 2光子カルシウムイメージング / 画像統計量 / 側頭葉経路
Outline of Annual Research Achievements

我々が知覚する視覚世界は、形、色、大きさ、奥行き、動きに加えて、状景や物体の表面が持つ構造的/光学的特徴である質感を備えている。質感知覚の神経機構の研究において、テクスチャ(表面材質感を与える肌理や模様)の処理過程の理解は近年大きく進んでいる。ヒトのテクスチャ知覚に利用されている画像統計量群が心理学的に明らかになり、その大脳皮質での処理過程がサルを用いた生理学的実験で探求されている。一次視覚野(V1野)細胞の視覚応答は、空間周波数等の基本的な画像統計量で反応の大部分が説明され高次統計量(フィルタ間の相関等)の影響をあまり受けないのに対し、V2野細胞の反応には高次統計量の影響が強く現れること、さらに上位のV4野では、多数ある画像統計量の内のほんの少数が個々の細胞の応答を決めることが示され、側頭葉経路をV1野からV4野へ向かうにつれてテクスチャ情報の処理が進む様子が判明しつつある。
本研究では、この処理過程の初段での情報処理内容を知る目的で、自然動画を提示している際のサルの初期視覚野(V1野)において2光子 Ca2+イメージングを行い、一計測領域あたり数10から数100個の神経細胞の活動を記録した。個々の細胞のCa2+応答を、様々な画像統計量に対する反応の重み付け和から記述予想するモデルの妥当性の検討を行った。今回は、運動エネルギーモデルを基本要素として持つモデルを構成し、どの程度の正確さで持ってV1細胞の反応を予測可能かの基本的検討を行った。実反応と予測反応の間の相関係数は平均0.6であり、これは、電気的に記録した活動電位列においてなされた成績にほぼ匹敵する。この結果は、符号化モデル法により、神経細胞の性質や大脳皮質の機能構築を探求できることを示している。NeuroImage誌に論文として発表を行った。

Research Progress Status

29年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

29年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (37 results)

All 2018 2017 2016

All Journal Article (14 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 9 results,  Open Access: 10 results,  Acknowledgement Compliant: 5 results) Presentation (22 results) (of which Int'l Joint Research: 3 results,  Invited: 4 results) Funded Workshop (1 results)

  • [Journal Article] Rapid responses of amygdala neurons discriminate facial expressions2018

    • Author(s)
      Inagaki M, Fujita I
    • Journal Title

      BioRxiv

      Volume: 未定 Pages: 1-31

    • DOI

      10.1101/174037

    • Related Report
      2017 Annual Research Report
    • Open Access
  • [Journal Article] Mapping stimulus feature selectivity in macaque V1 by two-photon Ca 2+ imaging: Encoding-model analysis of fluorescence responses to natural movies2018

    • Author(s)
      Ikezoe Koji、Amano Mahya、Nishimoto Shinji、Fujita Ichiro
    • Journal Title

      NeuroImage

      Volume: 印刷中 Pages: 1-12

    • DOI

      10.1016/j.neuroimage.2018.01.009

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Microstructural properties of the vertical occipital fasciculus explain the variability in human stereoacuity2018

    • Author(s)
      Oishi H, Takemura H, Aoki SC, Fujita I, Amano K
    • Journal Title

      BioRxiv

      Volume: 未定 Pages: 1-21

    • DOI

      10.1101/288753

    • Related Report
      2017 Annual Research Report
    • Open Access
  • [Journal Article] Switch from ambient to focal processing mode explains the dynamics of free viewing eye movements2017

    • Author(s)
      Junji Ito, Yukako Yamane, Mika Suzuki, Pedro Maldonado, Ichiro Fujita, Hiroshi Tamura, and Sonja Gruen
    • Journal Title

      Scientific Reports

      Volume: 印刷中 Issue: 1 Pages: 1082-1082

    • DOI

      10.1038/s41598-017-01076-w

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A relative frame of reference underlies reversed depth perception in anticorrelated random-dot stereograms2017

    • Author(s)
      Aoki SC, Shiozaki SM, Fujita I
    • Journal Title

      Journal of Vision

      Volume: 17(12):17 Issue: 12 Pages: 1-17

    • DOI

      10.1167/17.12.17

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Postnatal dendritic growth and spinogenesis of Layer-V pyramidal cells differ between visual, inferotemporal, and prefrontal cortex of the macaque2017

    • Author(s)
      Tomofuji Oga, Guy N. Elston, Ichiro Fujita
    • Journal Title

      Frontiers in Neuroscience

      Volume: 11:118 Pages: 118-118

    • DOI

      10.3389/fnins.2017.00118

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Weighted parallel contributions of binocular correlation and matching signals to conscious perception of depth2016

    • Author(s)
      Ichiro Fujita, Takahiro Doi
    • Journal Title

      Philosophical Transaction B

      Volume: 印刷中 Issue: 1697 Pages: 20150257-20150257

    • DOI

      10.1098/rstb.2015.0257

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Pooled, but not single-neuron, responses in macaque V4 represent a solution to the stereo correspondence problem2016

    • Author(s)
      Mohammad Abdolrahmani, Takahiro Doi, Hiroshi M.
    • Journal Title

      Journal of Neurophysiology

      Volume: 115 Issue: 4 Pages: 1917-1931

    • DOI

      10.1152/jn.00487.2015

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Postnatal development of intrinsic horizontal axons in macaque inferior temporal and primary visual cortices2016

    • Author(s)
      Quanxin Wang, Hisashi Tanigawa, Ichiro Fujita (QW and HT contributed equally to this work)
    • Journal Title

      Cerebral Cortex

      Volume: in press Pages: bhw105-bhw105

    • DOI

      10.1093/cercor/bhw105

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Basal dendrites of layer-III pyramidal neurons do not scale with changes in cortical magnification factor in macaque primary visual cortex2016

    • Author(s)
      Tomofumi Oga, Tsuguhisa Okamoto, Ichiro Fujita
    • Journal Title

      Frontiers in Neural Circuits

      Volume: 10:74 Pages: 74-74

    • DOI

      10.3389/fncir.2016.00074

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Similarity in neuronal firing regimes across mammalian species2016

    • Author(s)
      Yasuhiro Mochizuki, ..., Ichiro Fujita, et al.
    • Journal Title

      Journal of Neuroscience

      Volume: 36 Issue: 21 Pages: 5736-5747

    • DOI

      10.1523/jneurosci.0230-16.2016

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 大脳皮質と深層学習2016

    • Author(s)
      三田真志郎、藤田一郎
    • Journal Title

      脳21

      Volume: 19(3) Pages: 98-101

    • Related Report
      2016 Annual Research Report
  • [Journal Article] 大脳皮質におけるテクスチャ表現2016

    • Author(s)
      畑中岳、藤田一郎
    • Journal Title

      脳21

      Volume: 19(4) Pages: 154-157

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Visual processing in the ventral pathway: shape, face, color, material properties and stereoscopic depth2016

    • Author(s)
      Mikio Inagaki, Ichiro Fujita
    • Journal Title

      Brain and Nerve

      Volume: 68(11) Pages: 1363-1370

    • NAID

      40021002822

    • Related Report
      2016 Annual Research Report
  • [Presentation] 2光子イメージング法および符号化モデルによる視覚情報処理様式の解明2018

    • Author(s)
      藤田一郎、畑中学、池添貢司、竹内遼介、稲垣未来男、西本伸志
    • Organizer
      次世代人工知能シンポジウム2018
    • Related Report
      2017 Annual Research Report
  • [Presentation] 無理しない』:脳に学ぶ情報処理ストラテジー2018

    • Author(s)
      藤田一郎
    • Organizer
      次世代人工知能シンポジウム2018
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Human white matter structural properties correlate with individual difference in stereoacuity2017

    • Author(s)
      Oishi H, Takemura H, Aoki SC, Fujita I, Amano K
    • Organizer
      Vision Sciences Society Meeting 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Functional architecture of image statistics in macaque V42017

    • Author(s)
      Hatanaka G, Ikezoe K, Takeuch RF, Inagaki M, Nishimoto S, Fujita I
    • Organizer
      Neuroscience 2017(The 40th Annual Meeting of the Japan Neuroscience Society
    • Related Report
      2017 Annual Research Report
  • [Presentation] Relationship of tuning strength and local tuning diversity of neurons in primate V1 and V42017

    • Author(s)
      Takeuchi RF, Ikezoe K, Nishimoto S, Fujita I
    • Organizer
      Neuroscience 2017(The 40th Annual Meeting of the Japan Neuroscience Society
    • Related Report
      2017 Annual Research Report
  • [Presentation] サル視覚皮質V1野およびV4野における機能的集合の多様性とその定量的評価2017

    • Author(s)
      竹内遼介、池添貢司、西本伸志、藤田一郎
    • Organizer
      視覚科学フォーラム2017 第21回研究会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Semi-online determination of preferred stimuli for visual cortex neurons with deep generative networks2017

    • Author(s)
      Mita S, Fujimoto T, Takeuchi R, Tamura H, Fujita I
    • Organizer
      光操作研究会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 細胞集団による質感情報の符号化、復号化、皮質表現2017

    • Author(s)
      畑中岳、池添貢司、竹内遼介、稲垣未来男、西本伸志、藤田一郎
    • Organizer
      質感の集い2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] 深層生成ネットワークを用いた大脳皮質視覚野神経細胞の最適特徴量オンライン探索2017

    • Author(s)
      三田真志郎、藤元大河、竹内遼介、田村弘、藤田一郎
    • Organizer
      質感の集い2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] Diffusion properties of human visual white matter correlate with stereoacuity2016

    • Author(s)
      Hiroki Oishi, Hiromasa Takemura, Shuntaro C. Aoki, Ichiro Fujita, Kaoru Amano
    • Organizer
      Neuroscience 2016, Annural Meeting of Society for Neuroscience
    • Place of Presentation
      サンディエゴ(米国)
    • Year and Date
      2016-11-12
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Response sparseness for natural movies in macaque V1 and V4 estimated by 2-photon calcium imaging2016

    • Author(s)
      Koji Ikezoe, Takanori Fukazawa, Shinji Nishimoto, Shinjiro Mita, Ichiro Fujita
    • Organizer
      Neuroscience 2016, Annural Meeting of Society for Neuroscience
    • Place of Presentation
      サンディエゴ(米国)
    • Year and Date
      2016-11-12
    • Related Report
      2016 Annual Research Report
  • [Presentation] 二つの目で見る世界が立体に見える脳のメカニズム2016

    • Author(s)
      藤田一郎
    • Organizer
      第43回スポーツ心理学会・シンポジウム「三次元世界で物体を認知し働きかけるための脳内メカニズム」
    • Place of Presentation
      北星学園大学(北海道札幌市)
    • Year and Date
      2016-11-04
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] 高次視覚野の構成と情報処理2016

    • Author(s)
      藤田一郎
    • Organizer
      第57回日本視能矯正学会・シンポジウム「視覚情報処理ネットワークを探る」
    • Place of Presentation
      大阪グランキューブ(大阪府大阪市)
    • Year and Date
      2016-10-15
    • Related Report
      2016 Annual Research Report
  • [Presentation] Relationship of individual differences in stereoacuity to the visual white matter pathways2016

    • Author(s)
      Hiroki Oishi, Hiromasa Takemura, Shuntaro C. Aoki, Ichiro Fujita, Kaoru Amano
    • Organizer
      第39回日本神経科学大会
    • 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 Annual Research Report
  • [Presentation] Monkeys perceive reversed depth in anti-correlated random dot stereograms2016

    • Author(s)
      Tomofumi Oga, Mitsuhiro Nakatani, Ichiro Fujita
    • Organizer
      第39回日本神経科学大会
    • 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 Annual Research Report
  • [Presentation] Neuronal variability across repeated visual presentation of face: comparison between the temporal cortex and amygdala of monkeys2016

    • Author(s)
      Mikio Inagaki, Ichiro Fujita
    • Organizer
      第39回日本神経科学大会
    • 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 Annual Research Report
  • [Presentation] Population sparseness is lower in V4 than in V12016

    • Author(s)
      Shinjiro Mita, Koji Ikezoe, Takanori Fukazawa, Shinji Nishimoto, Ichiro Fujita
    • Organizer
      第39回日本神経科学大会
    • 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 Annual Research Report
  • [Presentation] Simulation of coarse depth judgement based on neural population responses in macaque area MT2016

    • Author(s)
      Toshihide Yoshioka, Takahiro Doi, Mohammad Abdolrahmani, Ichiro Fujita
    • Organizer
      第39回日本神経科学大会
    • 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 Annual Research Report
  • [Presentation] Spatial relation between ocular dominance map and orientation map in layer II of macaque V1 at cellular resolution2016

    • Author(s)
      Ryosuke Takeuchi, Koji Ikezoe, Mikio Inagaki, Kazuhito Hakumoto, Ichiro Fujita
    • Organizer
      第39回日本神経科学大会
    • 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 Annual Research Report
  • [Presentation] 脳がつくる3D世界~立体視のメカニズム2016

    • Author(s)
      藤田一郎
    • Organizer
      第72回日本弱視斜視学会総会(JASA)・第41回日本小児眼科学会総会(JAPO)合同学会
    • Place of Presentation
      パシフィコ横浜(神奈川県横浜市)
    • Year and Date
      2016-06-24
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] 両眼立体視を支える2つの計算過程とその神経メカニズム2016

    • Author(s)
      藤田一郎
    • Organizer
      生理学研究所研究会「視知覚の総合的理解を目指してー生理学、心理物理学、計算論」
    • Place of Presentation
      生理学研究所(愛知県岡崎市)
    • Year and Date
      2016-06-09
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] What fraction of neurons is active when one views natural scenes?: Response sparseness in macaque cortical areas V1 and V4 estimated by 2-photon calcium imaging2016

    • Author(s)
      Ichiro Fujita, Takanori Fukazawa, Shinji Nishimoto, Shinjiro Mita, Koji Ikezoe
    • Organizer
      ICN 2016-International Congress of Neuroethology
    • Place of Presentation
      モンテビデオ(ウルグアイ)
    • Year and Date
      2016-04-01
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Funded Workshop] Vision over vision: man, monkey, machine, and network models2016

    • Place of Presentation
      大阪大学脳情報通信融合研究センター(大阪府吹田市)
    • Related Report
      2016 Annual Research Report

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Published: 2016-04-26   Modified: 2018-12-17  

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