Distortion-product otoacoustic emissions in human newborns and adults.
Cubic distortion-product otoacoustic emissions (DPEs) may have clinical and research applications. We reliably recorded DPEs at some frequencies in all of the normal-hearing human adults and newborns tested. Adult and newborn DPEs were of comparable amplitude, with the exception that a prominent dip between 1 and 3 kHz in the adult data was less evident in the newborn data. DPE amplitude was a linear function of the intensity of the eliciting primary stimuli. The slopes of the linear input-output functions increased with increasing frequency. Except at the highest frequencies assessed, adult input-output functions were steeper than newborn input-output functions.
Lasky
R
R
University of Wisconsin-Madison Medical School.
Perlman
J
J
Hecox
K
K
D000161:Acoustic Stimulation; D000328:Adult; D001299:Audiometry; D001307:Auditory Perception / Q000502:physiology*; D001309:Auditory Threshold; D005260:Female; D006309:Hearing / Q000502:physiology; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D009622:Noise; D017084:Otoacoustic Emissions, Spontaneous