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Role of Presynaptic inhibition for controlling vilitional movement

Research Project

Project/Area Number 18500315
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Neurophysiology and muscle physiology
Research InstitutionNational Institute for Physiological Sciences

Principal Investigator

SEKI Kazuhiro  National Institute for Physiological Sciences, Dept. Developmental Physiology, Assistant Prof. (00226630)

Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥4,020,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥420,000)
Fiscal Year 2007: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2006: ¥2,200,000 (Direct Cost: ¥2,200,000)
KeywordsPrimate / Spinal cord / behaving animal / Presynaptic inhibition / 脊髓 / 随意運動 / 反射
Research Abstract

we examined the modulation of primary afferent depolarization (PAD) in monkeys performing a wrist flexion-extension task. We stimulated the superficial radial (SR) and Deep radial (DR) nerve and recorded evoked responses of single INs and local field potentials (LFP) in spinal cord [C6-T1]. When a monosynaptic response was observed, we delivered micro stimuli (1-20μA: 3-10Hz) continuously through the recording microelectrode and recorded antidromic volleys (AVs) in the SR through a tripolar cuff electrode. Single stimuli sometimes evoked multiple (2-8) AVs, possibly by activating afferent terminals with different conduction velocity. We calculated the size (area) of individual volleys (n=270) and averaged in each behavioral epoch[rest, cue, delay, movement, hold, etc]. As for SR, the size of most volleys (58%) increased or decreased significantly relative to control period in specific phases of the behavioral task, indicating that PAD was modulated in a task-dependent manner. AVs showing modulation had faster conduction velocities than those without modulation (57.04+-13.04 vs. 53.20+-13.65, p<0.01), suggesting the primary target of PAD modulation could be faster conducting fibers (i.e. A-beta). The size of many volleys increased during active wrist movement against an elastic load, when monosynaptic unit responses and LFPs decreased. These data suggest that low-threshold cutaneous input can be modulated presynaptically by changing the amount of PAD in a behaviorally relevant way (Fig.3). Comparable result was also obtained in the DR nerve.

Report

(3 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • Research Products

    (19 results)

All 2008 2007 2006

All Journal Article (9 results) (of which Peer Reviewed: 2 results) Presentation (9 results) Book (1 results)

  • [Journal Article] Spinomuscular Coherence in Monkeys Performing a Precision Grip Task2008

    • Author(s)
      Takei T., Seki K.
    • Journal Title

      Journal of Neurophysiology 99

      Pages: 2012-2020

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Spinomuscular coherence in monkeys perform-ing a precision grip task.2008

    • Author(s)
      Takei T, Seki K.
    • Journal Title

      J. Neurophysiol. 99(4)

      Pages: 2012-2020

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Reduction in maximal firing rate of motoneurons after 1-week immobilization of finger muscle in human subjects2007

    • Author(s)
      Seki K, Kizuka T, Yamada H
    • Journal Title

      Journal of Electromyography and Kinesiology 17

      Pages: 113-120

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] 随意運動に伴う感覚ゲーティングの脊髄内機構2007

    • Author(s)
      関 和彦
    • Journal Title

      バイオメカニズム学会誌 31

      Pages: 187-190

    • NAID

      110006838886

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Journal Article] Reduction in maximal firing rate of motoneurons after 1-week immobilization of finger muscle in human subjects.2007

    • Author(s)
      Seki K, Kizuka T, Yamada H.
    • Journal Title

      J. Electromyogr. Kinesiol. 17(2)

      Pages: 113-120

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Reduction in maximal firing rate of motoneurons after 1-week2007

    • Author(s)
      Seki K, Kizuka T, Yamada H
    • Journal Title

      J.Electromyogr.Kinesiol. 17(2)

      Pages: 113-120

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 随意運動の制御におけるシナプス前抑制の役割2007

    • Author(s)
      関和彦
    • Journal Title

      プレインサイエンスレビュー2006

      Pages: 155-178

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Properties of propriospinal neurons in the C3-C4 segments mediating disynaptic pyramidal excitation to forelimb motoneurons in the macaque monkey.2006

    • Author(s)
      Isa T, Ohki Y, Seki K, Alstermark B.
    • Journal Title

      J. Neurophysiol. 95(6)

      Pages: 3674-85

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Properties of propriospinal neurons in the C3-C4 segments mediating disynaptic pyramidal excitation to forelimb motoneurons in the macaque monkey.2006

    • Author(s)
      Isa T, Ohki Y, Seki K, Alstemark B
    • Journal Title

      J.Neurophysiol. 95(6)

      Pages: 3674-85

    • Related Report
      2006 Annual Research Report
  • [Presentation] 随意運動の制御における脊髄介在ニューロンの役割2007

    • Author(s)
      関 和彦, 武井 智彦
    • Organizer
      第54回中部日本生理学会大会予稿集
    • Place of Presentation
      岐阜大学
    • Year and Date
      2007-10-19
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Presentation] Function of spinal interneurons for controlling volitional movement2007

    • Author(s)
      Seki K, Takei T
    • Organizer
      54th Annual meeting of Chubu Physiologycal Society
    • Place of Presentation
      Univ, Gifu(Gifu)
    • Year and Date
      2007-09-19
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Spinomusclar coherence in monkeys performing a precision grip task2007

    • Author(s)
      Takei T, Seki K
    • Organizer
      第三十回日本神経科学学会大会
    • Place of Presentation
      パシフィコ横浜
    • Year and Date
      2007-09-11
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Presentation] Modulation of spinal unit resposes evoked from muscle afferents in a monkey performing an instructed delay task2007

    • Author(s)
      Seki K, Takei T
    • Organizer
      第三十回日本神経科学学会大会
    • Place of Presentation
      パシフイコ横浜
    • Year and Date
      2007-09-10
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Modulation of spinal unit resposes evoked from muscle afferents in amonkey performing an instructed delay task2007

    • Author(s)
      Seki K, Takei T
    • Organizer
      第三十回日本神経科学学会大会
    • Place of Presentation
      パシフィコ横浜
    • Year and Date
      2007-09-10
    • Related Report
      2007 Annual Research Report
  • [Presentation] Control of primate grasping movement by spinal cord2007

    • Author(s)
      Takei T, Seki K
    • Organizer
      2nd International symposium on Mobiligence
    • Place of Presentation
      淡路ウェスティンホテル
    • Year and Date
      2007-07-19
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Presentation] Control of primate grasping movement by spinal cord.2007

    • Author(s)
      Takei T, Seki K
    • Organizer
      2nd lnternational symposium on Mobiligence
    • Place of Presentation
      Awali westin hotel(Awaji)
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Modulation of spinal unit responses evoked from muscle afferents in a monkey performing an instructed delay task.2007

    • Author(s)
      Seki K, Takei T
    • Organizer
      30th Annual meeting of Japan Neuroscience Society
    • Place of Presentation
      Pacifico Yokohama(Yokohama)
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Spinomusclar coherence in monkeys performing precision grip task.2007

    • Author(s)
      Takei T, Seki K
    • Organizer
      30th Annugl meeting of Japan Neuroscience Society
    • Place of Presentation
      Paclfico Yokohama(Yokohama)
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Book] ブレインサイエンスレビュー20072007

    • Author(s)
      関 和彦
    • Publisher
      クバプロ
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary

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Published: 2006-04-01   Modified: 2016-04-21  

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