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

Contribution of the frontal eye field to the control of eye and neck movements

Research Project

Project/Area Number 21K06420
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 46030:Function of nervous system-related
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Izawa Yoshiko  東京医科歯科大学, 大学院医歯学総合研究科, 准教授(キャリアアップ) (40372453)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords前頭眼野 / 眼球運動 / 頭部運動 / 随伴発射 / 注視 / 神経科学
Outline of Research at the Start

頭部運動は、眼球運動と協調して視線の安定に関わる。我々は最近サルにおいて、頭部固定下に大脳前頭眼野刺激を行い頭部トルクと眼球運動の同時記録を行うことにより、前庭動眼反射から分離して、頭部の運動活動のcorollary discharge(随伴発射)により生じたと考えられる眼球運動を見出した。これまでに、前頭眼野の随伴発射信号が眼球と頭部運動制御に果たす役割は未だ知られていない。本研究は、前頭眼野が随意性頭部運動に伴う代償性眼球運動のための随伴発射信号の起源であることを同定し、その役割を明らかにすることを目的とする。実験は電気生理学的・解剖学的手法を総合し、神経回路に基づいて解析を進める。

Outline of Final Research Achievements

Focal stimulation in the frontal eye field (FEF) evoked eye and neck movements. Experiments were performed with concurrent recording of both movements in trained monkeys. We recorded neck forces under a head-restrained condition using a force-measuring system. Taking advantage of this approach, we could analyze neck forces and eye movements that were dissociated from the vestibulo-ocular reflex. We found ipsiversive slow eye movements in combination with contraversive neck forces, suggesting that the FEF may be a source of a corollary discharge signal for compensatory eye movements during voluntary neck movements.

Academic Significance and Societal Importance of the Research Achievements

随伴発射は運動活動のinternal feedback(内部帰還)信号が中枢性に生じたものである。本研究により得られた結果は、前頭眼野の随伴発射信号が、随意性頭部運動に伴って代償性眼球運動を起こすことを示している。この前庭動眼反射によらない、前頭眼野による代償性眼球運動の理解は、臨床的に前庭障害の平衡訓練に役立つと考えられる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (5 results)

All 2023 2022 2021

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Control of Motor Actions of the Eyes and Neck by the Frontal Eye Field2021

    • Author(s)
      伊澤佳子
    • Journal Title

      Equilibrium Research

      Volume: 80 Issue: 6 Pages: 580-584

    • DOI

      10.3757/jser.80.580

    • NAID

      130008160502

    • ISSN
      0385-5716, 1882-577X
    • Year and Date
      2021-12-31
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Contribution of the activity of fixation neurons in the primate frontal eye field to the suppression of optokinetic and vestibular nystagmus.2023

    • Author(s)
      Izawa, Y. and Suzuki, H.
    • Organizer
      The Gordon Research Conference 2023 on Eye Movements
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 視運動性眼振の抑制に関わるサル前頭眼野注視ニューロンの活動2023

    • Author(s)
      伊澤佳子, 鈴木寿夫
    • Organizer
      第82回日本めまい平衡医学会総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Suppressive control of optokinetic nystagmus by the primate frontal eye field.2023

    • Author(s)
      Izawa, Y., Suzuki, H.
    • Organizer
      The 100th Anniversary Annual Meeting of The Physiological Society of Japan
    • Related Report
      2022 Research-status Report
  • [Presentation] 頭部運動と代償性眼球運動の発現に関わる前頭眼野の機能2022

    • Author(s)
      伊澤佳子, 鈴木寿夫
    • Organizer
      第81回日本めまい平衡医学会総会
    • Related Report
      2022 Research-status Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi