Acoustic stapedial reflex in normal adults: biological behavior and determination of threshold levels
| Autor: | Ioannis Yiotakis, Stavros Korres, Elisa Ferekidou, Vasilios Zarikas, Dimitrios Kandiloros, Eleftherios Ferekidis, Anna Eleftheriadou |
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| Rok vydání: | 2006 |
| Předmět: |
Adult
Male medicine.medical_specialty Aging Admittance Healthy subjects Differential Threshold Stapedius Audiology Middle Aged Reflex Acoustic Surgery Otorhinolaryngology Acoustic Stimulation Differential threshold Reference Values Reference values otorhinolaryngologic diseases medicine Reflex Humans Female Acoustic reflex Susceptance Aged |
| Zdroj: | ORL; journal for oto-rhino-laryngology and its related specialties. 70(3) |
| ISSN: | 1423-0275 |
| Popis: | Objective: To record acoustic reflex thresholds for admittance (Y) and its components, susceptance (B) and conductance (G) in healthy subjects and to establish normative data. StudyDesign: Acoustic reflex threshold was determined in 100 healthy persons, divided into 5 age groups of 20 persons each (20–29, 30–39, 40–49, 50–59 and 60–69 years old). Detection was performed for Y, B, and G at 226-, 678- and 1,000-Hz probe tones, using 500-, 1,000-, 2,000- and 4,000-Hz stimuli. Results: Statistically significant differences in acoustic reflex thresholds were revealed between different components, stimuli and tones. The lowest threshold level was recorded for Y at 226 Hz using stimulus 1,000 Hz. Four percent missing values were observed at 226 Hz. Subjects belonging to different age groups had different reflex thresholds. Conclusion: Inclusion of acoustic reflex detection for B and G offers more detailed information about the middle ear status compared with Y alone, and appears to be sensitive in detecting subtle diseases. |
| Databáze: | OpenAIRE |
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