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Neural Mechanism for Recognition and Integration of Multi-Modal Sensory Information

Research Project

Project/Area Number 07680385
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Intelligent informatics
Research InstitutionTOKYO INSTITUTE OF TECHNOLOGY (1996)
The University of Electro-Communications (1995)

Principal Investigator

NAKAMURA Kiyohiko  TOKYO INSTITUTE OF TECHNOLOGY,Interdisciplinary Graduate School of Science and Engineering, PROFESSOR, 大学院・総合理工学研究科, 教授 (10172397)

Co-Investigator(Kenkyū-buntansha) IRIKI Atsushi  TOHO UNIVERSITY,School of Medicine, LECTURER, 医学部, 講師 (70184843)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1996: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1995: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsNEURAL NETWORK / LEARNING / TEMPORAL CORTEX / BODY IMAGE / INTRAPARIETAL SULCUS / ATTENTION / SOMATOSENSOSORY CORTEX / ストループ干渉 / 発火潜時 / 競争 / 側抑制
Research Abstract

Animals such as humans and monkeys have multi-modal sensors and integrate information from them in a few hundred milliseconds to respond to environmental demand. This study presents analysis of the sensory integration mechanism with a neural network model and neurophysiological data concerning monkey cortices. The results are :
First, a hypothetical mechanism of latency competition for cortical processing of the millisecond time range was verified with a biologically realistic model of the ventral pathway of temporal lobe : it was shown that cells of the superior temporal sulcus of the model discriminated sensory stimuli within the first 5 ms of response onset, as cells of the monkey did.
Second, neural activity at the intraparietal sulcus (IPS) of monkeys using rakes to take food was recorded. Neurons responded to visual stimuli of food presented in the area hands reach. After repeated use of rakes, the receptive field to food was extended to areas reachable with rakes. This suggests modification of body image during tool-use, feeling a tool as a extention of hand, might be coded by neurons of the IPS.
Third, neural substrates of facilitation of sensory resolution during attention-demanding tasks. It was found that neurons in the postcentral somatosensory cortex of the monkey started to discharge concurrent with the pupil dilation onset which occured well before the somatosensory stimulus. Neuronal firing rates were positively correlated with the degree of dilation, suggesting that the SI neural activity is under the direct influence of the attentional process.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] Kiyohiko Nakamura: "Latency competition as cortical processing of millisecond time scale" Proc.World Congress on Neural Networks. 1291-1294 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Atsushi Iriki: "Coding of modified body schema during tool use by macaqne postcentrol neurons" Neuro Report. 7. 2325-2330 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Atsushi Iriki: "Attention-irduced neuronal activity is the monkey sowat. sensory cortex reveuled by pupillometrics" Neuro science Research. 25. 173-181 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 中村清彦: "発火潜時競争機構のサル側頭葉細胞応答による検証" 電子情報通信学会技術研究報告. NC95. 209-214 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 渡辺由香里: "色-形状情報統合の神経機構の学習による形式過程のモデル解析" 電子情報通信学会技術研究報告. NC95. 31-36 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kiyohiko Nakamura: "Latency competition as cortical processing of millisecond time scale" Proc.World Congress on Neural Networks. 1291-1294 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Atsushi Iriki, M.Tanaka, and Y.Iwamura: "Coding of modified body schema during tool use by macaque postcentral neurones" NeuroReport. 7. 2325-2330 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Atsushi Iriki, M.Tanaka, and Y.Iwamura: "Attention-induced neuronal activity in the monkey somatosensory cortex revealed by pupillometrics" Neuroscience Research. 25. 173-181 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kiyohiko Nakamura: "Neural mechanism of latency competition for cortical processing of subsecond time range" Society for Neuroscience Abstracts. 22 (3). 1936 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kiyohiko Nakamura: "A model of ventral pathway of temporal lobe reproducing neural responses of superior temporal sulcus" Neuroscience Research. Suppl 20. S266 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kiyohiko Nakamura: "Evidence for latency competition producing sub-second response of the cerebrum" Dynamical Neuroscience Symposium Abstracts. 4 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kiyohiko Nakamura: "Temporal competition mechanism producing neural responses of the superior temporal sulcus" Society for Neuroscience Abstracts. 21 (2). 906 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kiyohiko Nakamura: "Time course analysis of neural responses along ventral pathway of temporal cortex" Abstracts of Satellite Symposium of IBRO : Physiology and Anatomy of the Association Corticies. P-18 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kiyohiko Nakamura: "Latency competition as cortical processing of millisecond time scale" Proc.World Congress on Neurel Networks. 1291-1294 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Atsushi Iriki: "Coding of modified body schema during tool use by macoque postcentral neurous" Neuro Report. 7. 2325-2330 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Atsushi Iriki: "Attention-induced neuronal activity in the monkey somatosensory cortex reveoled by prpillometrics" Neuroscience Research. 25. 173-181 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 渡辺由香里: "色・形状情報統合の神経機構の学習による形成過程のモデル解析" 電子情報通信学会技術研究報告. NC95. 31-36 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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