Cochlear implant, 3D coloured computed tomography (CT) scan. This device is implanted in the scalp, connected to the ear and the brain. The external component (microphone and sound processor) is worn on the ear.

A lead takes the sound to the transmitter part of the device, which is magnetically bound to the internal component which has been surgically placed on the skull under the skin (pink, blue and green areas).

The internal component converts the sound signal into electrical impulses sent to electrodes (yellow) implanted in the cochlea, the organ of hearing, allowing those with hearing losses to regain a sense of hearing. Science Library Photo.

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Comment by Jorgelito Hagens on August 10, 2017 at 9:56pm

Helicopters are deadly for the ear drums. I flew a lot in them as a land surveyor for the Bureau of Land Management. It was so fun!! I especially liked auto rotate, flying tree top & jumping out when hovering on a hill side.

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