Click-evoked otoacoustic emissions are most likely to be recorded from the ears of individuals with which condition?

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Multiple Choice

Click-evoked otoacoustic emissions are most likely to be recorded from the ears of individuals with which condition?

Explanation:
Click-evoked otoacoustic emissions come from the cochlea’s outer hair cells and can be detected only when those cells are functioning and the middle ear is clear. They are typically absent if there is cochlear damage that impairs outer hair cells, such as profound hearing loss or severe presbycusis, and they’re also reduced or absent if the middle ear isn’t transmitting sound properly, as in otitis media. An upper brainstem lesion, however, does not affect the outer hair cells or middle ear mechanics, so emissions can still be recorded. That’s why an upper brainstem lesion is the scenario where click-evoked OAEs are most likely to be detected.

Click-evoked otoacoustic emissions come from the cochlea’s outer hair cells and can be detected only when those cells are functioning and the middle ear is clear. They are typically absent if there is cochlear damage that impairs outer hair cells, such as profound hearing loss or severe presbycusis, and they’re also reduced or absent if the middle ear isn’t transmitting sound properly, as in otitis media. An upper brainstem lesion, however, does not affect the outer hair cells or middle ear mechanics, so emissions can still be recorded. That’s why an upper brainstem lesion is the scenario where click-evoked OAEs are most likely to be detected.

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