Speech and everyday environmental noises will sound different from what you remember. Your brain needs time to recognize what these sounds mean. This process is ongoing and is best achieved by wearing the speech processor continuously during waking hours. Results of cochlear implant surgery vary from person to person. Factors that can affect the outcomes of cochlear implantation include the age when hearing was lost, and the length of time between hearing loss and the cochlear implant surgery.
For adults, the best results are generally associated with a shorter period of profound hearing loss before cochlear implantation. Adults with little or no experience with sound tend to benefit less from cochlear implants. Explore Mayo Clinic studies of tests and procedures to help prevent, detect, treat or manage conditions. Cochlear implants care at Mayo Clinic. Mayo Clinic does not endorse companies or products.
Advertising revenue supports our not-for-profit mission. This content does not have an English version. This content does not have an Arabic version. Overview How cochlear implants work Open pop-up dialog box Close. How cochlear implants work A cochlear implant uses a sound processor that you wear behind your ear. Matt Little: Very happy. Melinda Little: She loves her daddy. Vivien Williams: Baby Aida can't hear any of it.
She was born deaf. Lisa Schimmenti, M. Vivien Williams: Surgeon Dr. Matthew Carlson is also on Aida's care team. Matt Little: "Hi, beautiful. Can you hear me? It's Daddy. Hi, Aida. Hi, big girl. Melissa DeJong, Au. It allows patients to… Colin Driscoll, M. External unit of cochlear implant and charger Open pop-up dialog box Close. External unit of cochlear implant and charger One type of cochlear implant has an external unit that attaches to the side of your head and combines a speech processor, microphone and transmitter in one device.
Behind-the-ear external unit of cochlear implant Open pop-up dialog box Close. Behind-the-ear external unit of cochlear implant In one type of cochlear implant, the external sound processor fits behind your ear and the transmitter attaches to the side of your head. Request an Appointment at Mayo Clinic. Share on: Facebook Twitter. Show references Cochlear implants. Accessed Oct. Before, during, and after implant surgery.
What is a cochlear implant? Cochlear implant health. Weber PC. Hearing amplification in adults. Smith RJH, et al. Hearing loss in children: Treatment. Flint PW, et al. While implantees may recognise some sounds when their speech processor is first turned on, others will become clearer over time and with practice. It is natural to expect to immediately enjoy the new sounds and understand conversation with an implant. However for many people the initial sound is confusing and even irritating.
Gradually the sound begins to make sense. The longer an implantee has been deaf the longer this will take. It takes time and practice to strengthen these nerve pathways. Recipients who lost their hearing later in life will have more memories and neural connections for sound in the brain. After they receive a cochlear implant, these memories can support them as they re-learn to hear with a cochlear implant.
For people who have been deaf for a long time or children who have been born deaf, there is little, if any hearing memory. The new sounds are meaningless until this hearing memory is built up. Perhaps it is like being in a room full of people speaking a foreign language - it takes time to sort through the noise, attach meaning to the sounds and make sense of what is heard. An implant works by electrically stimulating sections of the cochlear or inner ear.
Different sections of the cochlea are stimulated for different sounds. When the microphone detects a low pitch sound e. Where the electrode array is sitting in the cochlea varies from one person to another. Sounds are frequency shifted. This is similar to playing the same tune on a piano at different places on the keyboard. The ability to tell the difference between similar sounds is also difficult. Normal hearing ears have thousands of hair cells tuned to different frequencies; the implant only has 22 channels.
Print page How does a cochlear implant work? Photo: Cochlear implants can provide a sensation of hearing. Cochlear implants work in the following way:. The microphone of the cochlear implant picks up the sound and the speech processor converts the sound waves into a digital code which is then sent to the transmitter coil. The transmitter coil sends the coded signal through the skin to the implanted receiver which is located just under the skin.
The receiver converts the digital code to an electrical signal.
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