The issue of the relation between the tuning factor, the active gain, and the phase slope of the basilar membrane excitation is addressed. Different 1d-transmission line cochlear models are studied and compared. The active linear models are exactly solved in frequency domain whilst a fully nonlinear model is solved in time domain. An evident dependence of the phase slope on tuning is found in the linear models both in the passive and in the active cases. This dependence is much weaker for the nonlinear model solved in the time domain. This finding suggests that nonlinear behavior near the resonant place could play an important role in explaining the relation between tuning and phase gradient. The otoacoustic emissions generated by a linear backscattering mechanism, TEOAEs and SFOAEs, have also been studied. For a given roughness pattern, for all models, the OAE response was found to consist of a small set of place-fixed emission spots. As tuning increases, the latency of each spot is constant, whereas the relative intensity of the longest latency spots gradually increases.
Sisto, R., & Moleti, A. (2015). On the dependence of the BM gain and phase on the stimulus level. In MECHANICS OF HEARING: PROTEIN TO PERCEPTION: Proceedings of the 12th International Workshop on the Mechanics of Hearing (pp.070007). American Institute of Physics Inc. [10.1063/1.4939381].
|Autori:||Sisto, R; Moleti, A|
|Titolo:||On the dependence of the BM gain and phase on the stimulus level|
|Nome del convegno:||12th International Workshop on the Mechanics of Hearing: Protein to Perception|
|Luogo del convegno:||grc|
|Anno del convegno:||2014|
|Data di pubblicazione:||2015|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1063/1.4939381|
|Settore Scientifico Disciplinare:||Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin)|
|Tipologia:||Intervento a convegno|
|Citazione:||Sisto, R., & Moleti, A. (2015). On the dependence of the BM gain and phase on the stimulus level. In MECHANICS OF HEARING: PROTEIN TO PERCEPTION: Proceedings of the 12th International Workshop on the Mechanics of Hearing (pp.070007). American Institute of Physics Inc. [10.1063/1.4939381].|
|Appare nelle tipologie:||02 - Intervento a convegno|