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Large vestibular evoked myogenic potentials in response to bone-conducted sounds in patients with superior canal dehiscence syndrome

Brantberg, K; Lofqvist, L and Fransson, Per-Anders LU (2004) In Audiology & Neuro-Otology 9(3). p.173-182
Abstract
Dehiscence of the superior semicircular canal is a 'new' vestibular entity. Among these patients, the vestibular evoked myogenic potentials (VEMP) in response to air-conducted sounds are large. In the present study, VEMP in response to bone-conducted sounds were studied in 5 normal subjects, in 3 patients after ( unilateral) labyrinthectomy and in 4 patients with ( unilateral) superior canal dehiscence syndrome. The bone-conducted sound stimulus was a 250- and a 500-tone burst delivered monaurally on the mastoid using standard bone conductors. Among the normals, bone-conducted sounds delivered monaurally caused VEMP bilaterally. There was, however, a transcranial attenuation for the 500-Hz stimulus, but less so for the 250-Hz stimulus.... (More)
Dehiscence of the superior semicircular canal is a 'new' vestibular entity. Among these patients, the vestibular evoked myogenic potentials (VEMP) in response to air-conducted sounds are large. In the present study, VEMP in response to bone-conducted sounds were studied in 5 normal subjects, in 3 patients after ( unilateral) labyrinthectomy and in 4 patients with ( unilateral) superior canal dehiscence syndrome. The bone-conducted sound stimulus was a 250- and a 500-tone burst delivered monaurally on the mastoid using standard bone conductors. Among the normals, bone-conducted sounds delivered monaurally caused VEMP bilaterally. There was, however, a transcranial attenuation for the 500-Hz stimulus, but less so for the 250-Hz stimulus. Among the patients with labyrinthectomy there were VEMP on the healthy side, but not on the lesioned side, irrespective of whether the bone-conducted sounds were presented behind the healthy or the operated ear. Among the patients with superior canal dehiscence syndrome, the VEMP on the affected side were larger than on the healthy side. This suggests that there is also vestibular hypersensitivity for bone-conducted sounds in these patients. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
VEMP, skull taps, sacculus, superior, vestibulocollic, canal dehiscence syndrome, bone conduction
in
Audiology & Neuro-Otology
volume
9
issue
3
pages
173 - 182
publisher
Karger
external identifiers
  • wos:000220812500005
  • scopus:1842729356
ISSN
1421-9700
DOI
10.1159/000077268
language
English
LU publication?
yes
id
d2571550-1a8d-44f3-b2c3-6b9b4b27dc3b (old id 281911)
date added to LUP
2007-10-17 11:45:40
date last changed
2017-07-23 03:56:51
@article{d2571550-1a8d-44f3-b2c3-6b9b4b27dc3b,
  abstract     = {Dehiscence of the superior semicircular canal is a 'new' vestibular entity. Among these patients, the vestibular evoked myogenic potentials (VEMP) in response to air-conducted sounds are large. In the present study, VEMP in response to bone-conducted sounds were studied in 5 normal subjects, in 3 patients after ( unilateral) labyrinthectomy and in 4 patients with ( unilateral) superior canal dehiscence syndrome. The bone-conducted sound stimulus was a 250- and a 500-tone burst delivered monaurally on the mastoid using standard bone conductors. Among the normals, bone-conducted sounds delivered monaurally caused VEMP bilaterally. There was, however, a transcranial attenuation for the 500-Hz stimulus, but less so for the 250-Hz stimulus. Among the patients with labyrinthectomy there were VEMP on the healthy side, but not on the lesioned side, irrespective of whether the bone-conducted sounds were presented behind the healthy or the operated ear. Among the patients with superior canal dehiscence syndrome, the VEMP on the affected side were larger than on the healthy side. This suggests that there is also vestibular hypersensitivity for bone-conducted sounds in these patients.},
  author       = {Brantberg, K and Lofqvist, L and Fransson, Per-Anders},
  issn         = {1421-9700},
  keyword      = {VEMP,skull taps,sacculus,superior,vestibulocollic,canal dehiscence syndrome,bone conduction},
  language     = {eng},
  number       = {3},
  pages        = {173--182},
  publisher    = {Karger},
  series       = {Audiology & Neuro-Otology},
  title        = {Large vestibular evoked myogenic potentials in response to bone-conducted sounds in patients with superior canal dehiscence syndrome},
  url          = {http://dx.doi.org/10.1159/000077268},
  volume       = {9},
  year         = {2004},
}