what are the parts of a cochlear implant

What is the structure of cochlear implant?

These implants usually consist of 2 main components: The externally worn microphone, sound processor and transmitter system. The implanted receiver and electrode system, which contains the electronic circuits that receive signals from the external system and send electrical currents to the inner ear.

What is the external parts of a cochlear implant?

External hardware (a-d): The external portion consists of three parts: a microphone, a speech processor, and a transmitting coil.

What are the features of the cochlear implant?

All the implant devices have the following features in common: a microphone that picks up the sound, a signal processor that converts the sound into electrical signals, a transmission system that transmits the electrical signals to the implanted electrodes, and an electrode or an electrode array (consisting of multiple ...

What are the major components of a cochlear implant quizlet?

A CI has external and internal components. The external components include: the microphone, speech processor, and transmitter. The internal components include: the receiver and electrode array.

What are the three parts of the cochlea?

Parts of the Cochlea​ The cochlea is made up of three compartments (scala tympani, scala media, scala vestibuli) that are separated from each other by two membranes (basilar membrane and Reissner's membrane).

What are the parts of a hearing aid?

A hearing aid has three basic parts: a microphone, amplifier, and speaker. The hearing aid receives sound through a microphone, which converts the sound waves to electrical signals and sends them to an amplifier. The amplifier increases the power of the signals and then sends them to the ear through a speaker.

How many electrodes are there in a cochlear implant?

22 electrodesCochlear's implant has 22 electrodes, with one current source (two, if the positive source and the negative source are counted separately, as MED-EL counts) shared among all of the electrodes. The current source fires one electrode after another, but it cannot fire more than one at a time.

Where is electrode placed in cochlear implant?

The internal components; the receiver-stimulator, and the electrode, are surgically placed behind the ear, and the electrode is placed within the cochlea, respectively. The external components are worn much like a hearing aid, and consists of a microphone, processor and transmitter.

How do cochlear implants attach?

The surgeon makes a cut behind the ear and then opens the mastoid bone. The surgeon identifies the facial nerves and creates an opening between them to access the cochlea, which is then opened. He or she inserts the implant electrodes into the cochlea.

How does a cochlear implant work quizlet?

How does a cochlear implant work? The sound is picked up by the microphone, translated into electric signals, carried up to the coil across the skin and to the internal receiver, the receiver sends frequency-specific electrodes to the cochlea, and the auditory nerve sends them to the brain to be recognized as sound.

Who is a candidate for a cochlear implant quizlet?

To be a candidate for a cochlear implant, an adult should have prelingual deafness and never have used amplification. Cochlear implants can be configured with multiple electrodes. "Mapping" the cochlear implant can take place immediately after surgery.