Figure 3.
The (a) amplitude and (b) phase of the SG at the apex of the cochlea. SG is defined as the ratio of shearing displacement of the tectorial membrane and the top of the organ of Corti to the basilar membrane deflection. SG is a complex number whose phase represents the timing difference between the OHC-stereocilia deflection and the basilar membrane displacement. Curvature improves greatly the shear gain, which is a measure of the bending efficiency of the outer hair cell stereocilia.