%0 Journal Article
%T Vestibular Evoked Myogenic Potentials in Subject With Superior Canal Dehiscence Syndrome
%A Feray G¨¹LE£¿
%A Ne£¿e £¿ELEBISOY
%J Journal of Neurological Sciences
%D 2012
%I Ege University Press
%X Superior canal dehiscence syndrome (SCDS) is characterized by absence of the roof of the superior semicircular canal. Sound stimuli of higher decibels can cause vertigo and oscillopsia in these patients. A 38-year-old lady complaining about vertigo attacks associated with loud sounds as well as coughing and sneezing was evaluated. Her audiogram revealed a mild conductive type hearing loss on the left side. The caloric responses were normal. Vestibular evoked myogenic potential (VEMP) latencies recorded from the sternocleidomastoid muscles (SCM) were normal bilaterally ( p13 and n 23 latencies were 13.0 ms, 20.7 ms on the left side and 12.7 ms, 22.6 ms on the right side). The amplitude of the n13-p23 potential was 204 ¦ÌV on the left and 78 ¦ÌV on the right side. Repeated recordings showed that the amplitude asymmetry was persisting. Dehiscence of the superior canal acts as a third window and causes pressure and sound sensitivity. VEMPs can be recorded easily in patients with the abovementioned complaints to support the diagnosis before a high resolution temporal bone CT is performed.
%K Vestibular evoked myogenic potentials
%K Superior canal dehiscence syndrom
%U http://jns.dergisi.org/pdf/pdf_JNS_597.pdf