HANNAH GAL / SCIENCE PHOTO LIBRARY HANNAH GAL / SCIENCE PHOTO LIBRARY
Cochlear implant being worn by a 7-year-old girl. The external component (microphone and sound processor) is worn on the ear. The 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. The internal component converts the sound signal into electrical impulses sent to electrodes implanted in the cochlea, the organ of hearing, allowing those with hearing losses to regain a sense of hearing. This girl has implants for both ears (second implant partially seen at left). Photographed in 2011.
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