In this paper we introduce a simple cochlear model with outer hair cell somatic motility as the active process. The model includes longitudinal feed-forward coupling mechanism of the basilar membrane to the hair bundle of the outer hair cell. Our analysis indicates that the compressive nonlinearity is greatly enhanced by this coupling mechanism. To model otoacoustic emmissions we introduce a small random variation of the feed-forward strength. Increasing the feed-forward strength causes instability of the model resulting in oscillations. These oscillations are associated with spontaneous otoacoustic emissions. We also investigate our model in terms of stimulus frequency otoacoustic emissions.
|Translated title of the contribution||On Modeling Nonlinearity, Longitudinal Coupling, and Spatial Inhomogenity in the Cochlea|
|Title of host publication||What Fire is in Mine Ears: Progress in Auditory Biomechanics|
|Editors||Christopher A. Shera, Elizabeth S. Olson|
|Publisher||American Institute of Physics (AIP)|
|Pages||250 - 256|
|Publication status||Published - 2011|