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

Noninvasive studies on intrinsic alternation of perceived images in binocular rivalry based on high-resolution EE

Research Project

Project/Area Number 10309001
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field 広領域
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

KOBAYASHI Tetsuo  Res. Inst. For Electronic Sci., Hokkaido Univ., Asso. Prof., 電子科学研究所, 助教授 (40175336)

Co-Investigator(Kenkyū-buntansha) TAKEUCHI Fumiya  Res. Inst. For Electronic Sci., Hokkaido Univ., Research Associate, 電子科学研究所, 助手 (30281835)
HIRATA Yoshihiro  Res. Inst. For Electronic Sci., Hokkaido Univ., Research Associate, 電子科学研究所, 助手 (30250509)
Project Period (FY) 1998 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥15,600,000 (Direct Cost: ¥15,600,000)
Fiscal Year 1999: ¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 1998: ¥11,800,000 (Direct Cost: ¥11,800,000)
KeywordsBinocular rivalry / Brain / Vision / Consciousness / Awareness / Optokinetic nystagmus / EEG / 視知覚 / 事象関連電位 / 脳波
Research Abstract

In an attempt to detect the neural processes related to endogenous alternation of perceived images in binocular rivalry (BR), we have studied ERPs in ten healthy subjects. Vertical and/or horizontal gratings were presented to the left and right eyes separately. Subjects were instructed to press a button when perceived gratings changed. This triggered data acquisition. As a control experiment (Control 1), identical vertical (or horizontal) gratings were presented to both eyes and were changed to horizontal (or vertical) gratings. In this experiment subjects pressed a button when the perceived gratings were changed. In the second control experiment (Control 2), subjects pressed a button voluntarily at random moments while identical gratings were presented continuously. A broad negative component beginning at -400 ms and lasting until O ms was observed in the left parietal, left posterior-temporal and left occipital areas in BR. A prominent negative component peaking at -55 ms was observed centered in the parietal area. However, no corresponding component was observed in Control 2. Since the perceived image did not change in Control 2, the negative component observed in BR may reflect a neural process related to awareness of changes in perceived images.
Furthermore, we have measured and analyzed eye movements and subjects' button pressed data simultaneously in BR. A pair of vertical gratings drifting to opposite horizontal direction were presented to the left and right eyes separatory in BR. As a control experiment, the same data were measured in a binocularly fused condition (BF). It was found that the change in optokinetic nystagmus (OKN) occurred earlier than the button press in BR. The delay time of button press from the change in OKN in BR was significantly larger than that in BF. Individual difference in the change in OKN was smaller than that of button press.

Report

(3 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] Tetsuo Kobayashi: "ERPs reflecting awareness of changes in perceived images in binocular rivalry"Proc.of the 6th Int.Evoked Potentials Symp.. Vol.6. 660-666 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 加藤和夫: "両眼視野闘争における内的知覚図形交替に伴う事象関連電位"医用電子と生体工学. 36・2. 111-118 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tetsuo Kobayashi: "Principal component elimination method for the improvement of S/N in evoked neuromagnetic field measurements"IEEE Trans.on Biomedical Engineering. 46・8. 951-958 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tetsuo Kobayashi: "Nonstationary analysis of human coherent oscillatory MEG activities over the whole cortex"Proc.of 1999 Int.Symp.on Nonlincer Theory and its applications. Vol.1. 57-60 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 丸山雅紀: "眼球運動変化に基づく両眼視野闘争時における知覚交替の定量的解析"電子情報通信学会技術研究報告. MBE99-30. 47-54 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tetsuo Kobayashi: "Reactivity of human cortical oscillations reflecting conscious perception in binocular rivalry"Proc.of Toward a Science of Consciousness. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tetsuo Kobayashi, Kagao Kato and Shinya Kuriki: "ERPs reflecting awareness of changes in perceived images in binocular rivalry"Proc. Of the 6th Int. Evoked Potential Symp.. Vol.6. 660-666 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kagao Kato, Tetsuo Kobayashi and Shinya Kuriki: "Event-related potentials in alternation of perceived images in binocular rivalry"Brain Topography Today, ed. Y. Koga et al., (Elsevier Science B.V.). 262-265 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tetsuo Kobayashi and Shinya Kuriki: "Improvement of S/N in evoked neuromagnetic field by eliminating a spontaneous field component"Proc. Of 20th Annual Int. Conf. Of the IEEE-EMBS. 2217-2220 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tetsuo Kobayashi and Shinya Kuriki: "Principal component elimination method for the improvement of S/N in evoked neuromagnetic field measurements"IEEE Trans. On Biomedical Engineering. Vol.46, No.8. 951-958 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tetsuo Kobayashi: "Nonstationary analysis of human coherent oscillatory MEG activities over the whole cortex"Proc. Of 1999 Int. Symp. On Nonlinear Theory and its Application. Vol.1. 57-60 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tetsuo Kobayashi and Kagao Kato: "Reactivity of human cortical oscillations reflecting conscious perception in binocular rivalry"Proc. Of Toward a Science of Consciousness. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tetsuo Kobayashi: "Principal component elimination method for the improvement of S/N in evoked neuromagnetic field measurements"IEEE Trans. on Biomedical Engineering. Vol.46・No.8. 951-958 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Tetsuo Kobayashi: "Principal components representing oscillatory MEG activities over the whole cortex"Proc. of the 11th International Conf. on Biomagnetism. Vol.11. 361-364 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Tetsuo Kobayashi: "New aspects of human oscillatory MEG activities revealed by nonstationary analysis of principal components"Proc. of the third Int. Workshop on Biosignal Interpretation. Vol.3. 358-361 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Tetsuo Kobayashi: "Nonstationary analysis of human coherent oscillatory MEG activities over the whole cortex"Proc. of 1999 Int. Symp. on Nonlinear Theory and its Applications. Vol.1. 57-60 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 丸山雅紀: "眼球運動変化に基づく両眼視野闘争時における知覚交替の定量的解析"電子情報通信学会技術研究報告. MBE99-30. 47-54 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Tetsuo Kobayashi: "Reactivity of human cortical oscillations reflecting conscious perception in binocular rivalry"Proc. of Toward a Science of Consciousness. (印刷中).

    • Related Report
      1999 Annual Research Report
  • [Publications] Tetsuo Kobayashi 他: "ERPs reflecting awareness of changes in perceived images in binocular rivalry" Proc.of 6th Int.Evoked Potentials Symp.Vol.6. 660-666 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 加藤和夫,小林哲生 他: "両眼視野闘争における内的知覚図形交替に伴う事象関連電位" 医用電子と生体工学. 36・2. 111-118 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Kato, T.Kobayashi 他: "Event-related potentials in alternation of perceived images in binocular rivalry" Proc.of the 3rd Pan-Pacific Conf.on Brain Topography. Vol.3. 262-265 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 加藤和夫,小林哲生 他: "両眼視野闘争の知覚図形交替に伴う脳波変動" 生体・生理工学シンポジウム論文集. Vol.13. 561-564 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Tetsuo Kobayashi 他: "Improvement of S/N in evoked neuromagnetic fields by eliminating a spontaneous field component" Proc.of 20th Annual Int.Conf.of the IEEE-EMBS. Vol.20. 2217-2220 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Tetsuo Kobayashi 他: "Principal component elimination method for the improvement of S/N in evoked neuromagnetic field components" IEEE Trans.on Biomedical Engineering. (印刷中).

    • Related Report
      1998 Annual Research Report

URL: 

Published: 1998-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi