Noise-Induced Hearing Loss and Presbyacusis
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 w...
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Veröffentlicht in: | Audiology 1971-01, Vol.10 (5-6), p.323-333 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | 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. |
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ISSN: | 1499-2027 0020-6091 1708-8186 |
DOI: | 10.3109/00206097109072569 |