Cochlear implant

A type of hearing aid for profound hearing loss.


A device using a microprocessor to simulate the functions performed in the inner ear, to aid people whose ear and hearing problems are so severe that a hearing aid is of little or no use. A tiny electrical receiver and transmitter is surgically implanted into the inner ear; there it receives electrical signals from an external microphone and speech processor and transmits them to the brain. At its present state of development, the cochlear implant does not allow for normal hearing, but used in conjunction with lipreading, it can allow for much greater understanding of speech. The cochlear implant is only in experimental use with children. It is most successful with postlingual deaf people, who have some experience of spoken language.


An amplification device that is surgically inserted into the cochlea in which wires are placed through the round window and into the cochlea.


An electronic device designed to restore partial hearing to children and adults who are severely hearing impaired due to damage to the cochlea (inner ear) and are unable to benefit from hearing aids. Cochlear implants involve several components, including a surgically implanted transmitter, which is activated by a device worn outside the ear. Cochlear implants differ from hearing aids in that they do not enhance sound to make it louder or clearer. Instead, the cochlear implant bypasses damaged parts of the hearing system, converts speech and environmental sounds into electrical signals, and directly stimulates the hearing nerve.


A cochlear implant is an electronic device, inserted under a general anaesthetic, which stimulates the auditory system, restoring partial hearing in profound sensory deafness. Although there are many types of cochlear implant, they all consist of a microphone, a signal processor, a signal coupler (transmitter and receiver), and an array of electrodes. Most are multi-channel implants. The microphone and signal processor are worn outside the body, like a conventional hearing aid: they receive sound and convert it into an electronic signal which is transmitted through the skin to the receiver. Here the signal is transmitted to the array of electrodes which stimulates the cochlear nerve. Although cochlear implants do not provide normal hearing, most profoundly deaf patients who receive a cochlear implant are able to detect a variety of sounds, including environmental sounds and speech. The duration of hearing-loss and age at implantation are among the many factors which influence the results.


An electrical device that receives sound and transmits the resulting signal to electrodes implanted in the cochlea. That signal stimulates the cochlea so that hearing-impaired persons can perceive sound.


A cochlear implant is a device utilized to address severe hearing loss in individuals who do not benefit from traditional hearing aids. Unlike hearing aids that amplify sounds, a cochlear implant works by transforming sounds into electrical signals, which are then transmitted to the cochlear nerve deep within the inner ear. This innovative approach allows individuals to perceive and interpret auditory information despite profound deafness.


A cochlear implant comprises of small electrodes that are surgically inserted into the cochlea, along with a receiver that is implanted in the skull just behind and above the ear. Externally, a microphone, sound processor, and transmitter are worn. While a cochlear implant does not fully restore normal hearing, it allows for the detection of patterns of sound. When combined with lip-reading, it can facilitate speech comprehension and understanding.


 


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