Acoustic reflex amplitude and noise-induced hearing loss.
Acoustic reflex maximum amplitude measurements elicited both contralaterally and ipsilaterally were obtained from subjects with noise-induced hearing loss and compared with those obtained from normal-hearing subjects. The eliciting signal was a pure tone of 1 kHz presented for 1,000 ms. The groups were matched on age, sex, static immittance and ear canal volume. Acoustic reflex amplitudes were clearly reduced in noise-impaired subjects compared with normal-hearing subjects at a frequency where their hearing thresholds were normal.
Houghton
J M
JM
National Audiology Centre, Auckland, New Zealand.
Greville
K A
KA
Keith
W J
WJ
D000328:Adult; D001299:Audiometry; D001309:Auditory Threshold; D003051:Cochlea / Q000503:physiopathology; D006317:Hearing Loss, Noise-Induced / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D012022:Reflex, Acoustic