- Tytuł:
- Numerical investigation of the basilar membrane vibration induced by the unsteady fluid flow in the human inner ear
- Autorzy:
-
Wahl, Philipp
Ziegler, Pascal
Eberhard, Peter - Powiązania:
- https://bibliotekanauki.pl/articles/1845019.pdf
- Data publikacji:
- 2020
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
human cochlea
basilar membrane
unsteady viscous fluid flow
fluid-structure interaction
pressure-displacement-based fluid element
viscous boundary layer
tonotopy
auditory threshold
ludzki ślimak
membrana podstawna
niestabilny przepływ cieczy lepkiej
interakcja płyn-struktura
element hydrauliczny oparty na ciśnieniu wyporowym
lepka warstwa graniczna
tonotopia
próg słyszalności - Opis:
- For a deeper understanding of the inner ear dynamics, a Finite-Element model of the human cochlea is developed. To describe the unsteady, viscous creeping flow of the liquid, a pressure-displacement-based Finite-Element formulation is used. This allows one to efficiently compute the basilar membrane vibrations resulting from the fluid-structure interaction leading to hearing nerve stimulation. The results show the formation of a traveling wave on the basilar membrane propagating with decreasing velocity towards the peaking at a frequency dependent position. This tonotopic behavior allows the brain to distinguish between sounds of different frequencies. Additionally, not only the middle ear, but also the transfer behavior of the cochlea contributes to the frequency dependence of the auditory threshold. Furthermore, the fluid velocity and pressure fields show the effect of viscous damping forces and allow us to deeper understand the formation of the pressure difference, responsible to excite the basilar membrane.
- Źródło:
-
Archive of Mechanical Engineering; 2020, LXVII, 4; 381-414
0004-0738 - Pojawia się w:
- Archive of Mechanical Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł