Badania dynamiki działania wibracji ogólnej na narząd Cortiego

• Autorzy: Bochnia M.

Warianty tytułu

EN

An examination of the dynamism of the effect of whole-body vibration on Corti's organ

• Konferencja: XLVIII Otwarte Seminarium z Akustyki, Wrocław-Polanica Zdrój, 11-14 września 2001 r.
• Języki publikacji: PL

Abstrakty

EN

Most investigations of the effect of vibration on the organ of hearing represent results of long-term observation. A significant decrease of cochlear microphonics was observed in animals subjected to whole-body vibration. Results of short-term experiments were ambiguous. The aim of this experiment was to estimate the dynamics of the effect of whole-body vibration on cochlear microphonics in guinea pigs. 18 animals in 3 groups of 6 each were subjected to sinusoidal perpendicular vibration (10 Hz/5 mm/ 1.4 g rms) in a noiseless vibrational apparatus for 1 day (6 h), 10 days (60 h), and 30 days (180 h). After completion of the experiments, in every animal bilaterally, cochlear microphonics with a modified phase-sensitive detection technique were measured. The measurements were done for 6 frequencies from 260 Hz to 8 kHz using levels of acoustic impulse pressure of 70, 80, and 90 dB. For the 18 measuring - points (definite frequency and level of tone pressure) a decrease of microphonics was observed in 66% of the cases. In 33% (after 1 or 10 days of vibration) an increase (in comparison with the control group) was present. As statistical analysis of the obtained results indicates, the short-term experiments should not be taken into account in investigations of the harmfulness of vibration for the hearing organ.

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Prace Naukowe Instytutu Telekomunikacji i Akustyki Politechniki Wrocławskiej. Konferencje
• Rocznik: 2001
• Tom: Vol. 83, nr 27
• Strony: 307--311
• Opis fizyczny: bibliogr. 10 poz.

Twórcy

autor

Bochnia M.

• Katedra i Klinika Otolaryngologii, Akademii Medycznej we Wrocławiu, Chałubińskiego 2, Wrocław