- Tytuł:
- Test eferentny ślimaka – czułość i swoistość metody
- Autorzy:
-
Lisowska, Grażyna
Namysłowski, Grzegorz
Misiołek, Maciej
Wojciech, Ścierski
Orecka, Bogusława
Czecior, Eugeniusz
Dziendziel, Anna - Powiązania:
- https://bibliotekanauki.pl/articles/1398814.pdf
- Data publikacji:
- 2008
- Wydawca:
- Index Copernicus International
- Tematy:
-
kontralateralna supresja
emisje otoakustyczne
efekt eferentny
układ oliwkowo-ślimakowy przyśrodkowy - Opis:
- Introduction. The amplitude of click evoked otoacoustic emissions can be suppressed (reduced) with contralateral acoustic stimulation (CAS). This is thought to be due to the inhibitory control that the medial efferent auditory nerve exerts on outer hair cell function. One commonly used test of medial olivocochlear (MOC) function in humans involves measuring the degree of suppression of ipsilateral otoacoustic emissions (OAEs) by CAS. This effect is called contralateral suppression, efferent effect or olivocochlear reflex. Aim of the study. The objective of this study was to measure cut-off level of contralateral suppression, sensitivity and specificity of the efferent test. Material and methods. To evaluate the function of MOC system click evoked otoacoustic emissions (CEOAEs) with and without continuous contralateral broadband noise (BBN) stimulation were recorded in 14 patients with multiple sclerosis, 16 patients with unilateral cerebello-pontine angle tumor and control group matched for age and gender. BBN was presented at 50 dB SL and otoacoustic emissions were recorded in response to nonlinear clicks at 70 +/- 3 dB SPL. Results. The cut-off level was established at -1.4 dB. For 1.4 dB cut-off level of contralateral suppression the sensitivity of the efferent test was 90% and specificity was 70%. Conclusions. To conclude, assessment of efferent suppression may be a useful addition to the battery test employed in the investigation of multiple sclerosis and cerebello-pontine angle tumors. The MOC suppression test may provide a tool for an early diagnosis of the brainstem pathology
- Źródło:
-
Polish Journal of Otolaryngology; 2008, 62, 6; 747-754
0030-6657
2300-8423 - Pojawia się w:
- Polish Journal of Otolaryngology
- Dostawca treści:
- Biblioteka Nauki
Artykuł