Question
Which of the following part of the implant is inserted inside the structure as marked by an arrow in the image,during implant surgery?
A. Microphone
B. Speech processor
C. Electrode Array
D. Receiver stimulator
Show Answer
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Correct Answer » C
Explanation
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Ans : C. Electrode Array.
This marked structure is cochlea
Cochlear implant
Cochlear implants are neural prostheses that convert sound energy to electrical signals and can be used to stimulate the auditory division of the eighth nerve directly.
General criteria for cochler implant candidacy
- B/L severe to profound sensorineural hearing loss(with non-functional Cochlear Hair Cells).
- Little or no benefit from hearing aids.
- An intact and functional auditory processing pathway, from Spiral ganglion cells to – Auditory Nerve to -Auditory cortex.
Parts:
- Microphone, Speech-processor and Transmitter are the part of external component of cochlear implant, which remain outside the body. Receiver/Stimulator (Implanted under the skin) and Electrode array (implanted in the scala tympani of the cochlea) are the part of internal component of cochlear implant, which are fitted inside the body.
