Faridabad Speech & Hearing Centre

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How does a Cochlear Implant Work?

A Cochlear Implant has two parts:

    The External Components of the Cochlear Implant include the following:

  • Microphone
  • Speech Processor
  • Power Source (Battery)
  • Transmitter coil

The Microphone picks up sound signals from the environment and transfers them to the speech processor. The speech processor first picks up the oncoming signals from the microphone, analyses them and according to the mapping protocols set in the implant, changes the characteristics of the signal, and send it to the transmitting coil as an electrical signal. The Transmitting coil then, transfers the electrical signal electromagnetically to the internal components of the cochlear implant.

    The Internal components of the Cochlear Implant include the following:

  • Receiving Antenna
  • Internal Magnet
  • Receiver
  • Electrode Array

The Receiving Antenna picks up the electromagnetic signals from the external transmitting coil and transfers it to the receiver which make sense of the electrical signal received and thereafter stimulate the electrode array accordingly. The electrode array stimulates different areas of the Auditory nerve for different types of sounds. The function of the internal magnet is to create a magnetic coupling between the internal and the external components.