Equilibrium Research
Online ISSN : 1882-577X
Print ISSN : 0385-5716
ISSN-L : 0385-5716
Vestibular Evoked Myogenic Potential among Dizzy Patients
Hideo ShojikuMasao NagasakiSatsuki YasumuraRui Li ZhangKatsuichi AkaogiMuneharu ItoYukio Watanabe
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JOURNAL FREE ACCESS

1997 Volume 56 Issue 4 Pages 354-359

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Abstract
Click-evoked myogenic potential of cervical muscle to intense clicks shows a characteristic short-latency positivity-negativity, and it is thought to be due to vestibulo-collic reflex. In this study, in order to evaluate the origin, myogenic potential and caloric response were compared among 4 dizzy patients.
In the first two case (right delayed endolymphatic hydrops and right acoustic tumor), the myogenic potential to the click of affected ear was normal, while caloric testing revealed a high CP % (71% and 53%). In the remaining two cases (right Meniere's disease and left acoustic tumor), myogenic response was abnormal compared with low CP % (21% and 29%).
These discrepancies between myogenic potential and caloric response suggest that click-evoked short-latency myogenic potential may be dependent on lateral semicircular canal function.
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© Japan Society for Equilibrium Research
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