When someone cannot understand what people are saying—even when using hearing aids—a cochlear implant may help.
Instead of sending louder sounds into the ear, a cochlear implant works differently. The hearing detection cells (hair cells) are damaged or missing in many people with hearing loss. Cochlear implants send sound as electric signals beyond that damaged part of the inner ear (cochlea), straight to the hearing nerve. Cochlear implants are used to help both children and adults to hear sounds and understand speech.
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Mowry SE, Woodson E. Cochlear Implant Surgery. JAMA Otolaryngol Head Neck Surg. Published online September 26, 2019. doi:https://doi.org/10.1001/jamaoto.2019.2274
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