Theoretical study on understanding the information processing mechanism in electrosensory system as a system

• Project/Area Number: 15K07146
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Animal physiology/Animal behavior
• Research Institution: The University of Electro-Communications
• Principal Investigator: KASHIMORI Yoshiki 電気通信大学, 大学院情報理工学研究科, 教授 (70233707)
• Co-Investigator(Renkei-kenkyūsha): FUJITA Kazuhisa 津山高等専門学校, 総合理工学科, 講師 (80462141)
• Project Period (FY): 2015-10-21 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 神経科学 / 電気感覚システム / 数理モデル / 大規模並列計算 / 情報処理機構

Outline of Final Research Achievements

We studied the stimulus geometry and neural coding in discrimination of object’s shapes in electrosensory system. We investigated the computation ability of a GPGPU method and the accuracy of single-precision calculations. The GPGPU computation provides several advantages in reduction of computation time and accuracy of single-precision calculations. We also found from the calculation of electric field around a weakly electric fish that the difference between object’s shapes is represented by the difference in the maximum amplitude and width of the electric-field modulations caused by object rotation. Furthermore, we found that in receptors and the hindbrain object information is encoded in the firing patterns just before an object returns to the original form in the rotation.

Research Products

• [Journal Article] Evaluation of the computational efficacy in GPU-accelerated simulations of spiking neurons (2018)
  • Author(s): K. Fujita, S. Okuno, Y. Kashimori
  • Journal Title: Computation Volume: in press Issue: 9 Pages: 907-926
  • DOI: 10.1007/s00607-018-0590-0
  • Peer Reviewed
• [Journal Article] Neural representation of object's shape at the electroreceptor afferents on electrolocation (2017)
  • Author(s): K. Fujita, Y. Kashimori
  • Journal Title: Lecture Notes in Computer Science Volume: 10636 Pages: 877-884
  • DOI: 10.1007/978-3-319-70090-8_89
  • ISBN: 9783319700892, 9783319700908
  • Peer Reviewed
• [Journal Article] Computational efficacy of GPGPU-accelerated simulation for various neuron models (2017)
  • Author(s): S. Okuno, K. Fujita, Y. Kashimori
  • Journal Title: Lecture Notes in Computer Science Volume: 10638 Pages: 802-809
  • DOI: 10.1007/978-3-319-70139-4_81
  • ISBN: 9783319701387, 9783319701394
  • Peer Reviewed
• [Journal Article] 弱電気魚の電気定位における物体形状の神経コーディング (2017)
  • Author(s): 奥野 舜、藤田一寿、樫森与志喜
  • Journal Title: 信学技報(IEICE Technical Report) Volume: 117 Pages: 41-46
• [Journal Article] 知覚学習の適応行動に伴う一次視覚野への トップダウン効果の生成機構 (2017)
  • Author(s): 谷 遼、矢野 史郎、樫森与志喜
  • Journal Title: 信学技報(IEICE Technical Report) Volume: 117 Pages: 23-38
• [Journal Article] GPU-accelerated simulations of an electric stimulus and neural activities in electrolocation (2016)
  • Author(s): K Fujita, Y Kashimori
  • Journal Title: Lecture Notes in Computer Science Volume: 9950 Pages: 213-220
  • DOI: 10.1007/978-3-319-46681-1_26
  • ISBN: 9783319466804, 9783319466811
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] GPGPUによる様々なニューロンモデルのシミュレーションの高速化と計算精度の評価 (2016)
  • Author(s): 奥野舜、藤田一寿、樫森与志喜
  • Journal Title: 信学技報 (IEICE Technical Report) Volume: 116 Pages: 1-6
  • Acknowledgement Compliant
• [Journal Article] A neural mechanism of dynamic gating of task-relevant information by top-down influence in primary visual cortex. (2016)
  • Author(s): K. Kamiyama, K. Fujita, Y. Kashimori
  • Journal Title: BioSystems Volume: 150 Pages: 138-148
  • DOI: 10.1016/j.biosystems.2016.09.009
  • Peer Reviewed / Open Access
• [Journal Article] A neural mechanism of taste perception modulated by odor information. (2016)
  • Author(s): T. Shimemura, K. Fujita, Y. Kashimori
  • Journal Title: Chemical Senses Volume: 41 Pages: 579-589
  • DOI: 10.1093/chemse/bjw062
  • Peer Reviewed / Open Access
• [Journal Article] GPGPUによる刺激から神経活動までを再現するシミュレーションの高速化 (2016)
  • Author(s): 藤田一寿、阿部祐貴、小野寺洸哉、樫森与志喜
  • Journal Title: 信学技報(IEICE Technical Report) Volume: 115 Pages: 83-88
• [Presentation] 神経細胞のシミュレーションにおける膜電位のダイナミックスに与える浮動小数点数の精度の影響 (2018)
  • Author(s): 藤田一寿、樫森与志喜
  • Organizer: ニューロコンピューティング研究会
• [Presentation] Top-down influence on V1 responses on perceptual behavior produced by reinforcement learning (2018)
  • Author(s): Ryo Tani, Shiro Yano, Yoshiki Kashimori
  • Organizer: The 6th RIEC International Symposium on Brain Functions and Brain Computer
  • Int'l Joint Research
• [Presentation] 強化学習を用いた適応行動が生み出す高次領野から一次視覚野へのトップダウン効果 (2018)
  • Author(s): 谷 遼、矢野 史郎、樫森与志喜
  • Organizer: 視覚学会
• [Presentation] What features of an electric images received by a weakly electric fish represent the shape of an object? (2017)
  • Author(s): K. Fujita, Y. Kashimori
  • Organizer: The Japan Neuroscience Society
• [Presentation] Evaluation of computing speed and accuracy of a GPU-simulation method for large-scale spiking neural networks (2017)
  • Author(s): S. Okuno, Y. Kashimori, K. Fujita
  • Organizer: The Japan Neuroscience Society
• [Presentation] 味嗜好性行動における眼窩前頭皮質と扁桃体の機能的役割 (2017)
  • Author(s): 武井健児、樫森与志喜
  • Organizer: 味と匂い学会
• [Presentation] A neural mechanism of gating of task-relevant information by cross-coupling of brain rhythms (2017)
  • Author(s): Ryo Tani, Shiro Yano, Yoshiki Kashimori
  • Organizer: The Japan Neuroscience Society
• [Presentation] Associated dynamics between inferior temporal and prefrontal cortices in categorization task (2017)
  • Author(s): Y. Kashimori
  • Organizer: The Japan Neuroscience Society
• [Presentation] GPGPUによる様々なニューロンモデルのシミュレーションの高速化と計算精度の評価 (2016)
  • Author(s): 奥野舜、藤田一寿、樫森与志喜
  • Organizer: ニューロコンピューティング研究会
  • Place of Presentation: 東北大電気通信研究所（宮城県・仙台市）
  • Year and Date: 2016-11-18
• [Presentation] GPU-accelerated calculation of an electric field generated by an electric fish and neural activities of the electrtosensory system (2016)
  • Author(s): K Fujita, Y Kashimori
  • Organizer: 北米神経科学大会(Neuroscience 2016)
  • Place of Presentation: San Diego, California USA
  • Year and Date: 2016-11-12
  • Int'l Joint Research
• [Presentation] GPU-accelerated simulations of an electric stimulus and neural activities in electrolocation (2016)
  • Author(s): K Fujita, Y Kashimori
  • Organizer: 第２６回国際神経回路網国際会議（ICONIP 2016）
  • Place of Presentation: 京都大学百周年時計台記念館（京都府・京都市）
  • Year and Date: 2016-10-16
  • Int'l Joint Research
• [Presentation] GPUを用いた電気感覚刺激の計算の高速化 (2016)
  • Author(s): 藤田 一寿 樫森 与志喜
  • Organizer: 第３９回日本神経科学大会
  • Place of Presentation: 横浜パシフィコ（神奈川県・横浜市）
  • Year and Date: 2016-07-20
• [Presentation] GPGPUによる刺激から神経活動までを再現するシミュレーションの高速化 (2016)
  • Author(s): 藤田一寿、阿部祐貴、小野寺洸哉、樫森与志喜
  • Organizer: 電子情報通信学会
  • Place of Presentation: 玉川大学（東京都町田市）
  • Year and Date: 2016-03-22
• [Remarks] http://www.klb.es.uec.ac.jp