視性訓練による視性平衡機能向上の研究(1) : 視運動性眼振の訓練効果の検討  [in Japanese] Improvement of Optokinetic Reflexes by Optokinetic Training (1) : Training for Optokinetic Nystagmus  [in Japanese]

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Author(s)

    • 宮田 英雄 MIYATA Hideo
    • 岐阜大学医学部耳鼻咽喉科学教室 Department of Otorhinolaryngology, Gifu University School of Medicine
    • 伊藤 八次 ITO Yatsuji
    • 岐阜大学医学部耳鼻咽喉科学教室 Department of Otorhinolaryngology, Gifu University School of Medicine

Abstract

Optokinetic training (OKT) is known to improve optokinetic nystagmus (OKN), but little is known about the mechanism. To elucidate the mechanism, we examined the effect of OKT on OKN in pigmented rabbits. The rabbits received OKT (a step stimulus of 30 deg/sec, for 15 min a day) for 3 weeks. The OKN of the rabbits was tested with a step stimulus (1, 2, 5, 10, 20, 30, 45 deg/sec) once a week; we also examined the effect on training of injections of methamphetamine. OKT significantly increased the average steady state gain with the step stimulus but did not significantly change either the time to the steady state or the duration of optokinetic after-nystagmus (OKAN). Metham-phetamine (0.5 mg/kg i.p.) reduced the time to the steady state, before and after the 3-week training period, but did not significantly change the average steady state gain or the duration of OKAN. These results suggest that the oculomotor pathway, except for the velocity storage mechanism, may be responsible for the improvement seen with optokinetic training.

Journal

  • Equilibrium Research

    Equilibrium Research 54(3), 279-286, 1995-06-01

    Japan Society for Equilibrium Research

References:  27

Cited by:  2

Codes

  • NII Article ID (NAID)
    10008707856
  • NII NACSIS-CAT ID (NCID)
    AN00001485
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03855716
  • Data Source
    CJP  CJPref  J-STAGE 
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