Related topics: children · brain

Fish sex so loud it could deafen dolphins

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.

Older Neandertal survived with a little help from his friends

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 ...

Barn owls found to suffer no hearing loss as they age

(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 ...

TV sound system for the hard of hearing

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.

High-tech items giving deaf-blind online access

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.

Surviving dance club music (noise) with hearing intact

By tweaking a system in the ear that limits how much sound is heard, a global team of researchers has discovered one alteration that shows that the ability of the ear to turn itself down contributes to protecting against ...

Hearing tests on wild whales

Scientists published the first hearing tests on a wild population of healthy marine mammals. The tests on beluga whales in Bristol Bay, AK, revealed that the whales have sensitive hearing abilities and the number of animals ...

Connecting hearing helper molecules to the ear bone

Researchers at USC and Harvard have developed a new approach to repair cells deep inside the ear—a potential remedy that could restore hearing for millions of elderly people and others who suffer hearing loss.

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Hearing impairment

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.

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