Sensory hair cells in the inner ear and vestibular system convert mechanical stimuli, sound, and motion into neural activity that is responsible for the sensations of hearing, motion, and head position. In mammals, the loss of hair cells from acoustic over-stimulation, ototoxic drugs and aging is irreversible, leading to a permanent loss of function. However, it is now clear that hair cells in other vertebrates are capable of regenerating and recovering...
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