Cochlear Implant
An electronic medical device that partially restores hearing by directly stimulating the auditory nerve fibers of the cochlea through an electrode array. It consists of an external speech processor and an internal receiver-stimulator, bypassing damaged hair cells.
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A cochlear implant is an electronic device that partially restores hearing by directly stimulating the auditory nerve fibers in the cochlea via an electrode array, and consists of an external speech processor, a transcutaneous transmission coil and an implanted receiver-stimulator.
Unlike hearing aids, which merely amplify sound, cochlear implants bypass the damaged hair cells.
What cochlear implant users hear is "artificial sound" encoded by electrical pulses, in which frequency information is conveyed mainly through electrode position (tonotopy), while the fine temporal structure is substantially simplified.
Cochlear implants provide only a limited number of electrodes (commonly 12 to 22), each corresponding to a relatively wide frequency band, so frequency resolution is significantly reduced and stimulation of adjacent electrodes is often perceived as the same pitch.
In engineering communities, discussions about cochlear implants mostly focus on signal-processing algorithms, electrode design or clinical trial results, while users' own descriptions of perceptual quality are relatively scarce.
The bypass strategy of neural prostheses has previously been successfully applied in cochlear implants and the Argus II system for patients with retinitis pigmentosa.
All Facts (6)
A cochlear implant is an electronic device that partially restores hearing by directly stimulating the auditory nerve fibers in the cochlea via an electrode array, and consists of an external speech processor, a transcutaneous transmission coil and an implanted receiver-stimulator.
50%UnverifiedUnlike hearing aids, which merely amplify sound, cochlear implants bypass the damaged hair cells.
50%UnverifiedWhat cochlear implant users hear is "artificial sound" encoded by electrical pulses, in which frequency information is conveyed mainly through electrode position (tonotopy), while the fine temporal structure is substantially simplified.
50%UnverifiedCochlear implants provide only a limited number of electrodes (commonly 12 to 22), each corresponding to a relatively wide frequency band, so frequency resolution is significantly reduced and stimulation of adjacent electrodes is often perceived as the same pitch.
50%UnverifiedIn engineering communities, discussions about cochlear implants mostly focus on signal-processing algorithms, electrode design or clinical trial results, while users' own descriptions of perceptual quality are relatively scarce.
50%UnverifiedThe bypass strategy of neural prostheses has previously been successfully applied in cochlear implants and the Argus II system for patients with retinitis pigmentosa.
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