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
Scientists set their sights on hearing breakthrough for babies
Dec 11, 2009 |
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(PhysOrg.com) -- The first year to two years of life is a critical time for hearing impaired children and their language development. Whilst young babies with hearing difficulties can now be fitted with cochlear ...
Elusive protein points to mechanism behind hearing loss
Medicine & Health / Neuroscience
Dec 08, 2009 |
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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. ...
The number of 85-year-olds will increase by a third by 2020
Dec 23, 2009 |
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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, ...
Search results for hearing
Rocket science leads to new whale discovery
Nov 24, 2009 |
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Rocket science is opening new doors to understanding how sounds associated with Navy sonar might affect the hearing of a marine mammal - or if they hear it at all.
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 ...
Auditory illusion: How our brains can fill in the gaps to create continuous sound
Medicine & Health / Neuroscience
Nov 25, 2009 |
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It is relatively common for listeners to "hear" sounds that are not really there. In fact, it is the brain's ability to reconstruct fragmented sounds that allows us to successfully carry on a conversation in a noisy room. ...
Tactile input affects what we hear: study
Medicine & Health / Psychology & Psychiatry
Nov 30, 2009 |
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Humans use their whole bodies, not just their ears, to understand speech, according to University of British Columbia linguistics research.
Researchers create cell phones for sign language
Dec 02, 2009 |
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(PhysOrg.com) -- Cornell researchers and colleagues have created cell phones that allow deaf people to communicate in sign language, the same way hearing people use phones to talk.
Long-term testicular cancer survivors at high risk for neurological side effects
Nov 25, 2009 |
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Long-term survivors of testicular cancer who were treated with cisplatin-based chemotherapy had more severe side effects, including neurological side effects and Raynaud-like phenomena, than men who were not treated with ...
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 ...
Staying Power: Senate Hearing Focuses On Energy Storage
Dec 10, 2009 |
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Thursday's Senate Energy and Natural Resources Committee hearing featured testimony from experts about the power industry's need to develop systems capable of storing large amounts of electricity if the nation's ...
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.
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