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Cochlear Implants (Clinical Evaluation before Implantation (Audio logical…
Cochlear Implants
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Principle / Mechanism
Speech Sound ➡️ Speech Processor ➡️ Coding of Sound into Electrical impulses ( Radiofrequency Waves )
Various Coding Strategies ➡️
1.Simultaneous analogue strategy (SAS)
2.Spectral Speak (SPEAK)
3.Advanced Combination Encoder (ACE)
Radifreuency waves ➡️ Transmitter Coil ➡️ Receiver / Stimulator ➡️ Linear erray of Electrodes placed in Scala Tympanic Of Cochlea
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Useful in Severe to Profound Sensorineural Hearing Loss With Severe Degeneration Of Hair Cell Of Cochlea where Hearing Aids Are ineffective
Example
MED-EL , Nucleus &
Advanced Bionics Cochlear Implants