Science Fair Project Encyclopedia
Presbycusis
Age related hearing loss -- also known as presbycusis -- is not single disease but the is the term used for the cumulative effect of ageing on the ears. Most hearing loss begins after the age of 60, and is usually more noticeable in men than women. Both ears tend to be affected. It becomes harder to hear high pitched noises than low pitched noises. The change usually appears gradually over a number of years.
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details