Related topics: hearing loss
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.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with hearing
The number of 85-year-olds will increase by a third by 2020
18 hours ago |
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Health and social care provision needs to be put in place for a large increase (33%) in the 85 year old population in the UK by 2020, according to a study published today in the British Medical Journal.
Gene linked to a rare form of progressive hearing loss in males is identified
Dec 17, 2009 |
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A gene associated with a rare form of progressive deafness in males has been identified by an international team of researchers funded by the National Institute on Deafness and Other Communication Disorders. The gene, PRPS1, ...
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Hacker seeks reduced sentence, citing Asperger's
Dec 17, 2009 |
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(AP) -- A computer hacker who was a force behind one of the largest cases of credit card theft in U.S. history says he has a developmental disorder and is asking for a reduced sentence.
On the tip of your tongue: Researchers reveal our motor system activates when we hear speech
Medicine & Health / Neuroscience
Dec 22, 2009 |
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(PhysOrg.com) -- Researchers from Royal Holloway, University of London have discovered our motor system activates automatically when we hear speech. These findings could, in the future, play a central role ...
Scientists decode memory-forming brain cell conversations
Medicine & Health / Neuroscience
Dec 16, 2009 |
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The conversations neurons have as they form and recall memories have been decoded by Medical College of Georgia scientists.
Oceans becoming noisier thanks to pollution -- report
Dec 20, 2009 |
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The world's oceans are becoming noisier thanks to pollution, with potentially harmful effects for whales, dolphins and other marine life, US scientists said in a study published Sunday.
Lawyers: Google execs not liable for abuse video
Dec 16, 2009 |
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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.
Oracle expects EU to approve Sun deal next month
Dec 17, 2009 |
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(AP) -- Oracle Corp. said Thursday that its profit jumped 12.5 percent in the latest quarter and that it expects the European Union will finally approve its $7.4 billion purchase of Sun Microsystems Inc. ...
Major volcanic eruption feared in Philippines
Space & Earth / Earth Sciences
Dec 20, 2009 |
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(AP) -- The Philippines' most active volcano could have a huge eruption within days, officials warned Sunday after detecting a drastic surge in earthquakes and eerie rumbling sounds in surrounding foothills. ...
Free after 35 years: DNA clears Florida inmate
Dec 18, 2009 |
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(AP) -- For years, James Bain insisted he was home watching TV with his twin sister when a 9-year-old boy was kidnapped and raped.
Disability may be on the rise again after 20-year decline
Dec 21, 2009 |
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(PhysOrg.com) -- Disability rates among non-institutionalized older Americans increased between 2000 and 2005, a trend that could seriously impact the quality of life of seniors in the coming decades if it continues, according ...
Clinton: US would help raise billions on climate
Dec 17, 2009 |
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(AP) -- U.S. Secretary of State Hillary Rodham Clinton sought to put new life into flagging U.N. climate talks Thursday by announcing the U.S. would join others in raising $100 billion a year by 2020 to help ...
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