Delayed otoacoustic emissions arise from decaying basilar-membrane oscillations that sum in phase

Evidence

From this it becomes clear that the delayed emissions are not produced by early responses of the basilar membrane in response to the evoking tone burst. Rather, the decaying oscillations of some parts of the basilar membrane are responsible for the production of the long delay of the delayed emissions. The effect can be seen more clearly by inspecting the contributions of each section separately. The contributions cancel each other out in the early part of the delay. l<or the delay corresponding to that of the DEOAEs, however, the time functions of the contributions are nearly in-phase and are added together to produce the delayed emission. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 384

Categorization

• DEFINE: Explains the mechanism behind delayed evoked otoacoustic emissions (DEOAEs) in causal terms.