Noise-Induced Hearing Loss and Presbyacusis
- 1 January 1971
- journal article
- Published by Taylor & Francis in International Journal of Audiology
- Vol. 10 (5-6) , 323-333
- https://doi.org/10.3109/00206097109072569
Abstract
The effect of aging on hearing (threshold) levels at 1 000 and 4 000 Hz was investigated in war veterans who had normal hearing for their age at 1 000 Hz and considerable hearing losses at 4 000 Hz (produced by acoustic trauma or other war-time noise exposure) when first tested audiometrically. It was found that the threshold levels at both 1 000 and 4 000 Hz had increased by approximately the amounts predicted by presbyacusis curves, in spite of the hearing losses at 4 000 Hz. The results thus support the hypothesis that presbyacusis and noise-induced hearing loss are independent and additive at 4 000 Hz.Keywords
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