Youtube Hearing Test Measures Damage To Inner Ear; Are You The Same Age As Your Eardrums?
Headphones and nonoccupational noise have long been the usual suspects in both lawmakers' and mothers' plans to reduce harm to people's ears. Noise volume and duration of exposure can, over time, damage a person's inner ear, making it difficult or impossible to hear frequencies at the extreme.
People above certain ages lose the ability to hear high frequencies primarily because nerves inside the ear - called hair cells - degrade as people age. When sound hits a person's ear, the entering waves cause the ear drum to vibrate and send a string of vibrations through tiny bones in the ear, the cochlea, and into the hair cells, which eventually turn the sound vibrations into electrical impulses destined for the brain. As these hair cells are the first to encounter high frequencies, those frequencies are the first to go once the cells deteriorate.
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Unlike other organs, the organ in the inner ear - called the Organ of Corti - doesn't regenerate.
Read more at MedicalDaily.com.
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