ENG検査時の角膜網膜電位の変化について  [in Japanese] Studies on Corneo-Retinal Potentials during ENG Test  [in Japanese]

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Abstract

Changes of Corneo-Retinal Potentials (CRP) were studied during routine equilibrium function tests and various visual conditions in healthy subjects. The changes in CRP were measured by amplitudes of horizontal 10° calibration.<BR>1. In routine examinations, CRPs showed increased or decreased responses after each examination.<BR>2. CRPs mostly increased after OKP tests during routine equilibrium function tests. However, in the examinations of OKN of 30°/sec, 60°/sec, and 90°/sec, CRPs showed similar increases for each OKN velocity.<BR>In the younger group (21-39 years), the CRPs were more increased than those in the older group (65- years) after OKP test. When OKP test was performed two times, there were no significant differences between the CRPs caused by the first examination and the second one.<BR>3. CRPs showed a response decline after caloric test.<BR>4. CRPs were examined every two minutes after electrodes were placed on the subjects, in an illuminated room with eyes open. The CRPs increased gradually until 8 minutes later. With eyes closed in an illuminated room, and with eyes open and closed in a dark room, CRPs decreased until 8 minutes later.<BR>5. CRPs during equilibrium function tests were changed by visual conditions (light or dark). However they were not changed by eye movements.

Journal

  • Equilibrium Research

    Equilibrium Research 58(6), 626-631, 1999-12-01

    Japan Society for Equilibrium Research

References:  10

Codes

  • NII Article ID (NAID)
    10008713067
  • NII NACSIS-CAT ID (NCID)
    AN00001485
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    03855716
  • Data Source
    CJP  J-STAGE 
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