Hearing impairment
hideA hearing impairment or deafness is a full or partial decrease in the ability to detect or understand sounds. Caused by a wide range of biological and environmental factors, loss of hearing can happen to any organism that perceives sound. "Hearing impaired" is often used to refer to those who are deaf, although the term is viewed negatively by members of Deaf culture, who prefer the terms "Deaf" and "Hard of Hearing".
Sound waves vary in amplitude and in frequency. Amplitude is the sound wave's peak pressure variation. Frequency is the number of cycles per second of a sinusoidal component of a sound wave. Loss of the ability to detect some frequencies, or to detect low-amplitude sounds that an organism naturally detects, is a hearing impairment.
For more information about Hearing impairment, read the full article at
Wikipedia.
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News tagged with hearing loss
Elusive protein points to mechanism behind hearing loss
Medicine & Health / Neuroscience
Dec 08, 2009 |
5 / 5 (1) |
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(PhysOrg.com) -- A serendipitous discovery of deaf zebra fish larvae has helped narrow down the function of an elusive protein necessary for hearing and balance. The work, led by Rockefeller University’s A. ...
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Proposed Spacetime Structure Could Provide Hints for Quantum Gravity Theory
7 hours ago |
5 / 5 (19) |
9
(PhysOrg.com) -- Spacetime, which consists of three dimensions of space and one time dimension, is such a large, abstract concept that scientists have a very difficult time understanding and defining it. Moreover, ...
Why or 'wine-not' let New York groceries sell wine?
8 hours ago |
4 / 5 (1) |
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(PhysOrg.com) -- A Cornell researcher has developed simulation models to predict the economic implications of selling wine in New York grocery stores. With a new law, the state could reap about $22 million a year.
Researchers take the inside route to halt bleeding
9 hours ago |
4 / 5 (1) |
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Blood loss is a major cause of death from roadside bombs to freeway crashes. Traumatic injury, the leading cause of death for people age 4 to 44, often overwhelms the body's natural blood-clotting process.
Lawyers: Google execs not liable for abuse video
11 hours ago |
5 / 5 (1) |
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(AP) -- Four Google executives should not be held responsible for a video posted online that showed teenagers abusing an autistic youth in Turin, their lawyers argued Wednesday in an Italian court.
Lost water of the Napa Valley vineyards
Space & Earth / Earth Sciences
13 hours ago |
4.3 / 5 (3) |
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Getting the most out of every drop of water is a high priority for grape growers in the southern Napa Valley, where summers are hot and dry and vines have to be irrigated to make it through the growing season. But Stanford ...
New research may help to clean drainage from abandoned mines
16 hours ago |
5 / 5 (2) |
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(PhysOrg.com) -- In a quiet green glen near Ashville, Pa., lies a rust-colored pond. A deep, rectangular hole in the ground, it somewhat resembles an Olympic-sized pool. Few people, however, would make the ...
Scientists decode memory-forming brain cell conversations
Medicine & Health / Neuroscience
19 hours ago |
4.7 / 5 (10) |
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The conversations neurons have as they form and recall memories have been decoded by Medical College of Georgia scientists.
Greenland glaciers: What lies beneath
Space & Earth / Earth Sciences
Dec 15, 2009 |
3.8 / 5 (4) |
1
Scientists who study the melting of Greenland's glaciers are discovering that water flowing beneath the ice plays a much more complex role than they previously imagined.
Time for a new view of late-life dementia
Dec 15, 2009 |
4 / 5 (1) |
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Two new studies published in the December 16, 2009 issue of the Journal of the American Medical Association point to the need for a broader scientific perspective on late-life dementia, according to an editorial in the sa ...
Adobe Systems posts 4Q loss but says demand rising
Dec 15, 2009 |
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0
(AP) -- Adobe Systems Inc. said Tuesday that although it booked a loss in the fiscal fourth quarter, consumer demand improved and allowed the maker of Photoshop and Flash software to post an optimistic outlook ...
List of search results for hearing loss
