title: Distortion-product otoacoustic-emission suppression tuning in human infants and adults using absorbed sound power.
abstract: The greatest difference in distortion product otoacoustic emission (DPOAE) suppression tuning curves (STCs) in infant and adult ears occurs at a stimulus frequency of 6 kHz. These infant and adult STCs are much more similar when constructed using the absorbed power level of the stimulus and suppressor tones rather than using sound pressure level. This procedure incorporates age-related differences in forward and reverse transmission of sound power through the ear canal and middle ear. These results support the theory that the cochlear mechanics underlying DPOAE suppression are substantially mature in full-term infants.
authors.affiliation: Boys Town National Research Hospital, 555 North 30th Street, Omaha, Nebraska 68131, USA. Douglas.Keefe@boystown.org
authors.forename: Douglas H
authors.initials: DH
authors.lastname: Keefe
authors.forename: Carolina
authors.initials: C
authors.lastname: Abdala
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D000367:Age Factors; D004424:Ear Canal / Q000254:growth & development / Q000502:physiology*; D004432:Ear, Middle / Q000254:growth & development / Q000502:physiology*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008954:Models, Biological; D017084:Otoacoustic Emissions, Spontaneous / Q000502:physiology*