| Zugriffsnummer | 22356 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | A lumped-element model of the apical cochlea at low frequencies |
| Autor(in); Institution |
Marquardt, Torsten; University College London, Ear Institute, London, UK
Hensel, Johannes; 1.6, Schall, PTB-Braunschweig
|
| Quelle/Jahr | Concepts and challenges in the biophysics of hearing : proceedings of the 10th International Workshop on the Mechanics of Hearing:(2009), 337 - 339 |
| Herausgeber(in) |
Cooper, Nigel P.
|
| ISBN | 978-981-283-377-8 |
| Verlag | Singapore [u.a.]: World Scientific |
| Konferenzangaben | 10th International Workshop on the Mechanics of Hearing, Keele, 27-31, July, 2008, UK |
| Klassifikationscode | PACS: 43.64.+r |
| Zusammenfassung | Below a certain stimulus frequency, the length of the traveling wave becomes larger then the basilar membrane (BM) length and acoustic energy reaches the helicotrema. Dallos showed that in cat and chinchilla the oscillatory perilymph flow through ducts and helicotrema inertia-dominated. In contrast, cochleae of guinea pig and kangaroo rat, which exhibit more turns, more tapering, and a smaller helicotrema, are dominated by viscous friction at such low frequencies. Recently, we developed a non-invasive DPOAE based technique to measure the forward middle-ear transfer function (fMETF) for low frequencies, and were able to compare guinea pig and human cochleae. The results support Dallos' anatomy-based conjecture that the human cochlea should be inertia dominated at lowest frequencies. |
