Medical research

Outer hair cells regulate ear's sensitivity to sound

The ear's tiny outer hair cells adjust the sensitivity of neighbouring inner hair cells to sound levels rather than acting like an amplifier, suggests a new study published today in eLife.

Diseases, Conditions, Syndromes

Sound deprivation in one ear leads to speech recognition difficulties

Chronic conductive hearing loss, which can result from middle-ear infections, has been linked to speech recognition deficits, according to the results of a new study, led by scientists at Massachusetts Eye and Ear and published ...

Alzheimer's disease & dementia

Study links hearing aids to lower risk of dementia, depression and falls

Older adults who get a hearing aid for a newly diagnosed hearing loss have a lower risk of being diagnosed with dementia, depression or anxiety for the first time over the next three years, and a lower risk of suffering fall-related ...

Health

Poor diet causes blindness in a young 'fussy eater'

A poor diet caused a young patient's blindness, according to a case report published in Annals of Internal Medicine. According to the authors, nutritional optic neuropathy should be considered in any patient with unexplained ...

Neuroscience

Victorian child hearing-loss databank to go global

A unique Victorian databank that profiles children with hearing loss will help researchers globally understand why some children adapt and thrive, while others struggle.

Alzheimer's disease & dementia

Hearing loss increases risk for dementia in taiwanese individuals

(HealthDay)—Taiwanese individuals between the ages of 45 and 64 years old diagnosed with hearing loss are at a greater risk for developing dementia than those without hearing loss, according to a study published online ...

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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.

This text uses material from Wikipedia, licensed under CC BY-SA