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Gaze control of sports playrs and the possibility of improvement by training

Research Project

Project/Area Number 06454630
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 体育学
Research InstitutionOsaka University

Principal Investigator

KASAI Takeshi  Osaka University, Faculty of Health and Sport Sciences, Professor, 健康体育部, 教授 (30029459)

Co-Investigator(Kenkyū-buntansha) MATSUO Tomoyuki  Osaka University, Faculty of Health and Sport Sciences, Assistant Professor, 健康体育部, 助手 (00209503)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥5,000,000 (Direct Cost: ¥5,000,000)
Fiscal Year 1995: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1994: ¥3,600,000 (Direct Cost: ¥3,600,000)
Keywordsgaze saccade / eye movement / VOR / neural integrator / ゲイズ・サッケード / 視線サッケード / 眼-頭協調運動 / 視線角速度 / 前庭性動眼反射 / VORゲイン / スポーツと視覚
Research Abstract

The project has focused on the differences between sports playrs and ordinary people of gaze velocity and gaze accuracy while he/she is making a saccade to a visual target with a head turning. First, gaze velocity was measured with various angular velocities of the head on 9 subjects, 4 of them are playrs of various sports in which quick and accurate gaze control is frequently required, while other 5 are ordinary people. (1) Gaze velocity proved to increase in accordance with the increase of head velocity, which confirmed Guitton's and Pelisson's reports. Dependency of the gaze velocity on the head velocity was attributed to the gain reduction of VOR during a gaze saccade was performed. VOR gain during a gaze saccade was measured. On all of the 9 subjects, VOR gain reduction was observed, which was ranging 0.4-0.7. VOR gain was observed to decrease to roughly the same extent as the head velocity varied in the range faster than 100 deg/sec.
Second, accuracy of gaze to a visual target while the subject was passively turned in total darkness. Subjects were turned to the right or to the left up to 360 deg. They were asked to gaze at the nearest land mark, which was put surrounding the subject on every 30 deg. after they were rotated on the chair in the dark. The positions the subject looked at in the dark was accurately proportional to the physical angle of the head turning. It was proved that the brain can know the physical angle of head rotation through the vestibular signal, which is regarded as a velocity sensor of head rotation. VOR gain was artificially raised and lowered by means of special goggles and sustained rotatory stimulus. The perceived angle of head rotation was dependent on the VOR gain artificially manipulated. Thus, that the brain has an integrator which converts head velocity signal from the semicircular canal to position signal, and that the integrator input is subjected to the gain adjustment of VOR.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (7 results)

All Other

All Publications (7 results)

  • [Publications] T. Kasai, T. Takeshita & H. Tsukamoto: "Perception of head rotation modified by VOR gain and its significance" Contemporary Ocular Motor and Vestibular Research ed. D. Zee et al. Gerog Thieme Verlag. 360-362 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 小川正,笠井健: "交連性抑制結合にもとづいた眼球運動系における神経積分器の適応機構" システム制御情報学会論文誌. 8. 391-398 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Kasai, T.Takeshita, H.Tsukakmoto: "Perception of head rotation modified by VOR gain and its significance" Contemprary Ocular Motor and Vestibular Research, Eds.D.Zee et al., Georg Thieme Verlag. 360-362 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Ogawa, T.Kasai: "An adaptive neural integrator model in the oculomotor system based on the commisuural inhibitory connections" Japanese Jounal of System, Control and Information. 8. 391-398 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 小川正、笠井健: "交連性抑制結合にもとづいた眼球運動系における神経積分器の適応機構" システム制御情報学会論文誌. 8. 391-398 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.KASAI,S.TAKESHITA: "Porception of head rotation modified by VOR gain and its significance" Contemporary Ocular Motor and Vestibular Research Georg Thieme Verlag. 360-362 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 笠井健: "空間知覚と眼-手協調運動" 眼科臨床医報. 88. 67-70 (1994)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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