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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 confined to higher frequencies.
Additional recommended knowledge
Hearing loss usually begins gradually after the age of sixty, and is usually found more often in men than women. This can be miscontributed to men having a greater exposure to environmental noise. However, exposure to environmental noise can lead to Noise-induced hearing loss (NIHL), a hearing issue that is separate from presbycusis.
Over time, the detection of high-pitched sounds becomes more difficult and both ears tend to be affected.
Examples of microscopic changes seen in this condition are hair cell degeneration of the cochlea and giant stereociliary degeneration.
Factors responsible for presbycusis:
Recently, this condition has led to the development of technologies to stop younger people from loitering near British stores (The Mosquito), and the development of a cell phone ringtone, Teen Buzz, for students to use in school, that many older instructors are unable to hear. In September 2006 this technique was used to make a dance track called 'Buzzin'. The track had two melodies, one that everyone could hear and one that only younger people could hear.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Presbycusis". A list of authors is available in Wikipedia.|