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 1000 ms. The groups were
matched on age, sex, static immitance 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.