Multiple internal reflections in the cochlea and their effect on DPOAE fine structure.

摘要: In recent years, evidence has accumulated in support of a two-source model distortion product otoacoustic emissions (DPOAEs). According to such models DPOAEs recorded the ear canal are associated with two separate sources cochlear origin. It is interference between contributions from that gives rise DPOAE fine structure (a pseudoperiodic change level or group delay frequency). Multiple internal reflections base cochlea (oval window) and DP tonotopic place can add additional significant components for certain stimulus conditions thus modify structure. DPOAEs, at frequency increments 4 8 Hz, were fixed f2/f1 ratios 1.053, 1.065, 1.08, 1.11, 1.14, 1.18, 1.22, 1.26, 1.30, 1.32, 1.34, 1.36 four subjects. The resulting patterns amplitude (the negative slope phase) revealed several previously unreported addition commonly reported...