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An adequate parameter evaluating the galvanic body sway test: comparison with the caloric test in patients with vestibular schwannomas

Published online by Cambridge University Press:  29 June 2007

Takeshi Tsutsumi  and
Atsushi Komatsuzaki
Takeshi Tsutsumi*
Affiliation:
Department of Otolaryngology, School of Medicine, Tokyo Medical and Dental University, Tokyo 113-8519, Japan.
Atsushi Komatsuzaki
Affiliation:
Department of Otolaryngology, School of Medicine, Tokyo Medical and Dental University, Tokyo 113-8519, Japan.
*
Address for correspondence: Dr. T. Tsutsumi Department of Otolaryngology, School of Medicine, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo-ku, Tokyo 113-8519, Japan. Fax: +81-3-3813-2134
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Abstract

It has been reported that the galvanic body sway test does not correlate with the caloric test. We evaluated the galvanic body sway test in patients with vestibular schwannomas using three parameters: the angle of deviation response onset, the maximum value of the deviation response, and the area of deviation. These parameters reflect velocity, position, and locus of the centre of pressure respectively. Among these parameters, only the angle of deviation response onset showed unilateral weakness of the response correlating with the canal paresis value, which indicates that velocity is responsible for conduction in the vestibular nerve. However, the galvanic body sway test is apt to be preferred to the caloric test. This might be attributed to the decreased sensitivity of this test.

Keywords

Neuroma, acousticVestibular function tests
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 113 , Issue 2 , February 1999 , pp. 118 - 121
Copyright
Copyright © JLO (1984) Limited 1999

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