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KMID : 0960220020010010108
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Journal of the Korean Balance Society
2002 Volume.1 No. 1 p.108 ~ p.112
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Galvanic Nystagmus in Normal Person
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정운교/Woon Kyo Chung
이주형/김수찬/남기창/김덕원/이원상/Ju Hyoung Lee/Soo Chan Kim/Ki Chang Nam/Deok Won Kim/Won Sang Lee
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Abstract
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Background and objectives: Vestibulo-ocular reflex and vestibulo-spinal reflex are induced by transmatoid galvanic stimulation of vestibular system. Nystagmus and body sway are result of each reflex. Recently, videooculograph possible to
record a
minute ocular movement was commonly used, vestibulo-ocular reflex induced by galvanic simulation is easily documented. The purposes of this study are to evaluate the galvanic nystagmus in normal persons in order to better understand the
physiology
of
the vestibular system.
Materials and methods: Eye movement of 20 neurootologic normal subjects by both side tranmstoid galvanic stimulation (40cases) were analyzing by videonystagmography.
Results: The direction of nystagmus in fast phase was to the negative electrode. Galvanic nystagmus was occurred all normal subjects when stimulus intensity was more than 2㎃. There was positive correlation between slow phase velocity(SPV)
and
electric current but negative correlation was noted between asymmery of SPV and electric current.
Conclusions: It is suggested that the galvanic nystagmus test could be a new diagnostic tool for evaluation of vestibular status.
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