Badania doświadczalne przemieszczeń dynamicznych ślimaka świnki morskiej

• Autorzy: Dobrucki A. , Abramski K. , Bochnia M. , Dziewiszek W.

Warianty tytułu

EN

Experimental study of the dynamic dislocations of the guinea pig cochlea

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

Abstrakty

EN

The guinea pig is frequently used as an experimental animal in the examination of vibratory disorders of the hearing organ. Its bony cochlea is found on the medial wall and projects into the tympanic bulla. In man, the cochlea is totally situated in the petrous part of the temporal bone. These anatomical differences may be responsible for the interspecies dissimilarities in the manner of their dynamic dislocations. The aim of the investigation was to see whether the cochlea of a guinea pig subjected to whole-body vibration vibrates as a rigid body. We sought differences between the inclinations of the base and the top of the cochlea attached to an exciter and subjected to perpendicular sinusoidal vibrations of the frequencies 50, 100, 300 and 500 Hz. We investigated five temporal bones received from animals weighting from 350 to 670 g. We measured oscillations with an interference technique using Michelson's interferometer. Two beams of light were emitted from a He - Ne laser (wave length of 632 nm). The first fell on the examined object, the other on a motionless mirror. After reflection, both beams interfered. We registered the interference stripes by means of a digital oscilloscope and counted using a impulse meter. No essential differences between the amplitudes of the inclinations of the top and cochlea base were detected. This means that the cochlea of the guinea pig vibrates as a rigid body. The animal selected can be useful in experiments of vibratory damages of the ear.

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Prace Naukowe Instytutu Telekomunikacji i Akustyki Politechniki Wrocławskiej. Konferencje
• Rocznik: 2001
• Tom: Vol. 83, nr 27
• Strony: 313--318
• Opis fizyczny: bibliogr. 10 poz.

Twórcy

autor

Dobrucki A.

autor

Abramski K.

autor

Bochnia M.

autor

Dziewiszek W.

• Instytut Telekomunikacji i Akustyki, Politechniki Wrocławskiej, Wybrzeże Wyspiańskiego 27, Wrocław