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Implantable microphone could lead to fully internal cochlear implants. This tiny, biocompatible sensor may overcome one of the biggest hurdles that prevent the devices from being completely implanted.

Researchers developed a prototype of an implantable microphone for a cochlear implant. Their device, which senses the movement of the ear drum in the inner ear, performed as well as commercial hearing aids and could someday enable a fully internalized cochlear implant.

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