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BIOLOGY, M8 2023 HSC 1 MC

A cochlear implant is a device that is used to assist with hearing loss.

What does the cochlear implant electrode array stimulate?

  1. Hairs
  2. Ossicles
  3. Oval window
  4. Auditory nerve
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\(D\)

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→ The cochlear implant is able to bypass a dysfunctional cochlear and directly stimulate the auditory nerve.

\(\Rightarrow D\)

BIOLOGY, M8 EQ-Bank 6 MC

A patient has been diagnosed with severe hearing loss in the inner ear.

Which type of hearing technology can be used to help restore the patient's hearing?

  1. Hearing aid
  2. Cochlear implant
  3. Artificial ear drum
  4. Bone conduction implant
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`B`

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→ The cochlear implant can bypass the cochlear and send electric impulses directly to the auditory nerve.

`=>B`

BIOLOGY, M8 2019 HSC 6 MC

How does the cochlear implant assist people with severe hearing loss?

  1. It amplifies sound.
  2. It stimulates the ear drum.
  3. It stimulates the auditory nerve.
  4. It amplifies vibrations in the cochlea.
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`C`

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→ The cochlear implant can bypass the cochlear and send electrical impulses directly to the auditory nerve.

`=>C`


♦♦ Mean mark 42%.

BIOLOGY, M8 2021 HSC 25

A patient visited an audiologist for a hearing test. The audiologist tested both ears at specific frequencies. The volumes at which each frequency could be heard are shown.
 

  1. Plot the data on the grid provided and include a key.   (3 marks)
     

  1. What conclusions can be drawn about the patient's hearing?   (2 marks)

  2. It is discovered that there is a complete and permanent blockage of the outer ear, but the cochlea is still fully functional.
  3. Justify the use of a suitable technology to assist the patient's hearing.   (3 marks)

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a.  


 

b.   Right ear is within normal hearing range.

Left ear has a deficit and cannot hear at a normal level.
 

c.    Effective technology: Bone Conduction Implants

Bone conduction implants would prove to be the most effective technology to restore hearing to this patient. 

Bone conduction implants detect sound waves via a microphone, relaying them to a sound processor that converts the waves into vibrations which are then directly transferred to the cochlea. This process bypasses the ear blockage, therefore restoring hearing to the patient.

Show Worked Solution

a.   


 

b.   → Right ear is within normal hearing range.

→ Left ear has a deficit and cannot hear at a normal level.
 

c.    Effective technology: Bone Conduction Implants

→ Bone conduction implants would prove to be the most effective technology to restore hearing to this patient. 

→ Bone conduction implants detect sound waves via a microphone, relaying them to a sound processor that converts the waves into vibrations which are then directly transferred to the cochlea.

→ This process bypasses the ear blockage, therefore restoring hearing to the patient.


♦ Mean mark (c) 43%.