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Different groups of hair cells in the ear vibrate in response to different tones, and they also “push back” at the sounds, Corey said...
TRPA1 is located on the 100 to 150 protrusions called cilia on hair cells in the ear, which are “absolutely critical” for sound-hearing ability, Corey said...
...It’s fair to say that hair cells are among the most vulnerable elements in the inner ear,” said Lieberman. “Both congenital and acquired deafness is due in large part to hair cell loss...
...eardrum in turn causes three tiny bones inside the ear to vibrate. The last of these bones taps against a snail-shaped, fluid-filled structure called the cochlea, which houses the hair cells that produce the TRPA1 protein...
Structures attached to the cilia control the opening and closing of the TRPA1 protein. The opening of the TRPA1 protein causes a difference in electrical potential energy which spurs the hair cell to release neurotransmitters. These are picked up by nerve fibers and translated into electrical signals—the language that the brain understands...