When cells in the human body divide, they must first make accurate copies of their DNA. The DNA replication exercise is one of the most important processes in all living organisms and is fraught with risks of mutation, which ...
Cell & Microbiology
Mar 29, 2024
0
131
Many mammals suffer hearing loss in old age, but bats were thought to be immune to this phenomenon because of the importance of hearing for echolocation. However, researchers in Israel have discovered that bats lose their ...
Plants & Animals
Mar 30, 2023
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9
In the inner ear, there are two different types of sensory cells that are responsible for hearing. An MHH research team has now identified the molecular switch for the formation of these inner and outer hair cells and thus ...
Cell & Microbiology
Jan 30, 2023
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85
If naked mole-rats were human, they would be prescribed hearing aids. With six mutations in genes associated with hearing, naked mole-rats can barely hear the constant squeaking they use to communicate with one another. This ...
Plants & Animals
Sep 3, 2020
2
139
It is one of the great unsolved mysteries of anthropology. What killed off the Neanderthals, and why did Homo sapiens thrive even as Neanderthals withered to extinction? Was it some sort of plague specific only to Neanderthals? ...
Archaeology
Sep 19, 2019
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415
A species of Mexican fish amasses in reproductive orgies so loud they can deafen other sea animals, awed scientists said Wednesday, calling for preservation of the "spectacle" threatened by overfishing.
Ecology
Dec 20, 2017
1
1110
An older Neandertal from about 50,000 years ago, who had suffered multiple injuries and other degenerations, became deaf and must have relied on the help of others to avoid prey and survive well into his 40s, indicates a ...
Archaeology
Oct 23, 2017
2
117
(Phys.org)—A small team of researchers with the University of Oldenburg has found that barn owls do not suffer hearing loss as they get older. In their paper published in Proceedings of the Royal Society B, the group describes ...
Families often watch TV together, but what happens when one member has hearing difficulties? Usually the result is a compromise on listening volume that doesn't really satisfy anyone.
Engineering
Nov 13, 2014
1
1
Tanisha Verdejo loves to surf the Internet for online shopping deals. She chats on Facebook, learns about new recipes and enjoys sending emails to friends and family.
Hi Tech & Innovation
Apr 8, 2014
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0
A 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.
This text uses material from Wikipedia, licensed under CC BY-SA
