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Japanese

THE DIAGNOSTIC SIGNIFICANCE OF NYSTAGMUS OBSERVED IN THE ELECTRONYSTAGMOGRAPHIC EXAMINATION Kimitaka Kaga 1 pp.589-592
Published Date 1974/9/20
DOI https://doi.org/10.11477/mf.1492208108
  • Abstract
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 A study of spontaneous nystagmus is made on 100 normal individuals as well as upon 100 patients. Idiopathic nystagmus is found in 41% of normal individuals when placed at a constant gaze at an object, eyes closed, performance of mental arithmatic with the eyes closed or eyes covered. These cases consist of almost one half of the recorded nystagmus among patients. In the diagnosis of vertigo producing disorders these nystagmuses are probably of no significance which are of low intensity usually below 6 degrees/sec, occasionally reaching 6-10 degrees/sec. In most cases the direction to left is similar to that of the right.

 The cause of the idiopathic nystagmus is unknown, but care should be taken to note that all recorded nystagmus in ENG is not always significant in reaching a diagnosis in neurotology.


Copyright © 1974, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 印刷版ISSN 0386-9679 医学書院

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