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
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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Master gene Math1 controls framework for perceiving external and internal body parts
Dec 14, 2009 |
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Waking and walking to the bathroom in the pitch black of night requires brain activity that is both conscious and unconscious and requires a single master gene known as Math1 or Atoh1, said Baylor College of Medicine researchers ...
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.
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.
Efforts under way to make Web more accessible
Electronics / Consumer & Gadgets
Dec 15, 2009 |
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(AP) -- Imagine not being able to use a mouse to open a Web browser or a keyboard to type an e-mail. What if you couldn't distinguish colors on a computer screen or type the distorted letters in order to ...
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. ...
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.
New study levels new criticisms at food industry
Dec 14, 2009 |
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A new study released Monday, Dec. 14, in Washington, D.C., criticizes the nation's food and beverage industry for failing to shift their marketing efforts aimed at children. The report said television advertising continues ...
Mobile phone English lessons a hit in Bangladesh
Dec 14, 2009 |
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Every morning, Ahmed Shariar Sarwar makes it his daily ritual to call number 3000 on his mobile phone to get lessons in English -- his passport to a better life in impoverished Bangladesh.
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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