Coupling Model For Basilar Membrane With Delay Action

In this paper, the delay action of outer hair cells in its electromotility is discussed by investigating the frequency selectivity and intensity discrimination of basilar membrane vibration. To explor this question, we introduce a hypothesis that there is descending feedback of auditory efferent onto outer hair cells by proposing a novel cochlear amplifier model with delay action based on the cochlea's microanatomy, as well as outer hair cell (OHC) motility, to account for the cochlea's characteristic behavior such as the frequency selectivity and nolinear of basilar membrane.Firstly, based on the research of auditory system especially the outer hair cells motility, according the descending efferent, as the dominant role of superior olive complex on cochlear hair cells, we propese the feedback control of descending efferent on basilar membrane by changing the speed in the electromotility of OHC. Then, the delay action-based mathematical cochlear model produced responses that are comparable to physiological measurements. The results illustrate a novel understanding of the OHC contribution on basilar membrane's characteristic behavior.