Distortion-product otoacoustic emission (DPOAE) following pure tone and wide-band noise exposures.
The aim of our investigations was to determine how the intensity of distortion-product otoacoustic emission (DPOAE) changes following different sound and noise exposures. We performed examinations on 20 healthy people with normal hearing. DPOAEs were recorded scanning the 0.5-6 kHz frequency interval before and after the exposures. We exposed the subjects to 0.5, 1, 2, 4 and 6 kHz pure tones and wide-band noise (intensity: 80 dB HL, duration: 3 minutes). We conclude that the amplitudes of DPOAEs changed immediately after exposures at most frequencies. DPOAE intensities decreased at some frequencies in the middle frequency range (1-2 kHz), and increased at low and particularly at high frequencies.
Kiss
J G
JG
Albert Szent-Györgyi Medical University, Department of Otolaryngology, Szeged, Hungary. kjg@orl.szote.u-szeged.hu
Tóth
F
F
Rovó
L
L
Venczel
K
K
Drexler
D
D
Jóri
J
J
Czigner
J
J
D000328:Adult; D001301:Audiometry, Pure-Tone / Q000379:methods*; D006311:Hearing Disorders / Q000175:diagnosis*; D006801:Humans; D009622:Noise; D017084:Otoacoustic Emissions, Spontaneous / Q000502:physiology*; D013997:Time Factors