DPOAEt

DPOAEt refers to a specific type of distortion-product otoacoustic emission (DPOAE) measurement. Otoacoustic emissions are sounds generated by the inner ear, specifically the cochlea, in response to external auditory stimuli. They are produced by the outer hair cells, which act as amplifiers within the cochlea. DPOAEs are a type of evoked otoacoustic emission, meaning they are elicited by presenting two pure tones, known as primary tones, to the ear at different frequencies (f1 and f2) and intensity levels. The cochlea then generates a third tone, the distortion product, at a frequency that is a mathematical combination of the two primary tones, typically 2f1 - f2.

The "t" in DPOAEt likely denotes a specific characteristic or parameter of the DPOAE measurement, though its exact meaning can vary depending on the research context or equipment used. It might refer to a particular measurement technique, a specific time window for signal averaging, a threshold determination method, or a unique analysis parameter. Without further context on the origin of "DPOAEt," its precise definition remains ambiguous. However, DPOAEs in general are widely used in audiology and otology for assessing cochlear function, diagnosing hearing loss, and monitoring the effects of ototoxic drugs or noise exposure. They provide a non-invasive way to evaluate the integrity of the outer hair cell system.