how does age plays a factor with hearing loss?
superman asked:
ive looked at a couple of webpages and other resources but it doesnt tell me how it plays one of a major roll of hearing loss.
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ive looked at a couple of webpages and other resources but it doesnt tell me how it plays one of a major roll of hearing loss.
December 2nd, 2009 at 2:11 am
Age related hearing loss is known medically as presbyacusis. Your better off searching for that term.
From wikipedia:
“Presbycusis, or age-related hearing loss, is the cumulative effect of aging on hearing. Also known as presbyacusis, it is defined as a progressive bilateral symmetrical age-related sensorineural hearing loss. The hearing loss is most marked at higher frequencies. Deterioration in hearing has been found to start very early, from about age 18 years. The ISO standard 7029 shows expected threshold changes due purely to age for carefully screened populations (i.e. excluding those with ear disease, noise exposure etc), based on a meta-analysis of published data (Robinson & Sutton 1979). Age affects high frequencies more than low, and men rather more than women. One early consequence is that even young adults lose the ability to hear very high frequency tones above 15 or 16kHz. Despite this age-related hearing loss may only become noticeable later in life. The effects of age can be exacerbated by exposure to environmental noise, whether at work or in leisure time (shooting, music, etc). This is Noise-induced hearing loss (NIHL) and is distinct from presbycusis.
Over time, the detection of high-pitched sounds becomes more difficult, and speech perception is affected, particularly of sibilants and fricatives. Both ears tend to be affected.” James