| 1. |
- Brantberg, K, et al.
(författare)
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Age-related changes in vestibular evoked myogenic potentials
- 2007
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Ingår i: Audiology & neuro-otology. - : S. Karger AG. - 1421-9700. ; 12:4, s. 247-253
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Tidskriftsartikel (refereegranskat)abstract
- Vestibular evoked myogenic potentials (VEMP) in response to sound stimulation (500 Hz tone burst, 129 dB SPL) were studied in 1000 consecutive patients. VEMP from the ear with the larger amplitude were evaluated based on the assumption that the majority of the tested patients probably had normal vestibular function in that ear. Patients with known bilateral conductive hearing loss, with known bilateral vestibular disease and those with Tullio phenomenon were not included in the evaluation. It was found that there was an age-related decrease in VEMP amplitude and an increase in VEMP latency that appeared to be rather constant throughout the whole age span. The VEMP data were also compared to an additional group of 10 patients with Tullio phenomenon. Although these 10 patients did have rather large VEMP, equally large VEMP amplitudes were observed in a proportion of unaffected subjects of a similar age group. Thus, the finding of a large VEMP amplitude in response to a high-intensity sound stimulation is not, per se, distinctive for a significant vestibular hypersensitivity to sounds.
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| 2. |
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| 3. |
- Brantberg, K, et al.
(författare)
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Migraine-associated vertigo
- 2005
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Ingår i: Acta oto-laryngologica. - : Informa UK Limited. - 0001-6489 .- 1651-2251. ; 125:3, s. 276-279
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Tidskriftsartikel (refereegranskat)
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| 4. |
- Brantberg, K, et al.
(författare)
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Posterior canal dehiscence syndrome caused by an apex cholesteatoma
- 2006
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Ingår i: Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology. - : Ovid Technologies (Wolters Kluwer Health). - 1531-7129. ; 27:4, s. 531-534
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Tidskriftsartikel (refereegranskat)
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| 5. |
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| 6. |
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| 7. |
- Brantberg, K, et al.
(författare)
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Testing vestibular-evoked myogenic potentials with 90-dB clicks is effective in the diagnosis of superior canal dehiscence syndrome
- 2009
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Ingår i: Audiology & neuro-otology. - : S. Karger AG. - 1421-9700. ; 14:1, s. 54-58
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Tidskriftsartikel (refereegranskat)abstract
- Vestibular-evoked myogenic potentials (VEMP) in response to 90-dB-nHL clicks were studied in 20 patients (22 ears) with superior canal dehiscence syndrome. Their amplitude was compared to the VEMP from the ‘unaffected’ ears of 113 patients using the same stimulus level. The 113 control subjects were those from a previous study on 1,000 patients who had had large VEMP amplitudes in response to 500-Hz 129-dB-SPL tone bursts, and, because of this, had been tested with 90-dB-nHL clicks (which are a much weaker sound stimulus than our routine 500-Hz tone burst). It was found that 90-dB-nHL clicks clearly distinguished patients with vestibular hypersensitivity to sounds. In patients, the VEMP amplitude was usually larger than the simultaneously recorded background electromyographic activity (i.e. ‘corrected’ amplitude >1), whereas this was not the case for the controls. Consequently, it is suggested that 90-dB-nHL clicks can be used to screen for vestibular hypersensitivity to sounds. This finding has clinical implications for patients with suspected Tullio phenomenon because the definitive VEMP test for this (i.e. estimation of VEMP threshold) is not only time-consuming, but there is also difficulty related to the low signal-to-noise ratio close to the threshold.
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| 8. |
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