Bio Question? (1 Viewer)

[ekoolish]

Need assistance with this question
Describe the structure and function of a hearing aid and a cochlear implant.

 

[marcquelle]

try wikipedia

 

[samthebear]

do you use the McGRAW-HILL bio comms textbook? if you do go to pages 74 to 77. the table should give you enough information to answer the question.

if you dont have that book, log onto the bio study group - i'll help u there

 

[ekoolish]

nw, compiled an answer after i borrowed some books from the library, couldn't find much relevant info on the net for it though.

 

[alphaisanidiot]

If I remember bio correctly, both hearing aids and cochlear implants transfer sound energy to elevtrical energy. Hearing aid have the purpose of amplifying sound energy and are external devices on the ear, used mostly for people with outer or middle ear damage to hear better. and cochlear implants require surgery and are an internal device (obviously) for people with inner ear damage, have damage to auditory nerve and/or who are profoundly deaf to actually restore or provide hearing for them and not just amplify sound. They have to learn to interpret sound after surgery. Thats all I got..

 

[fliick]

They BOTH are artificial hearing devices, battery operated.

Hearing implants;
-one component; microphone, amp, earphone.
-amplifies vibrations to physically stimulate nerves of cochlea.
-uses normal auditory pathway.
-detects fewer sounds than cochlear implant
-sits on ear canal
-conditioned to substitute for middle ear damage (ruptured tympanic membrane, damaged ossicles)
-do not require surgery
-almost invisible
-relatively inexpensive
-no sideeffects
-no programming needed

Cochlea Implant;
-3 components (implanted receiver package, speech processor, headset)
-electrically stimulates nerves of the cochlea.
-able to detect more sounds.
-receiver and electron array in inner ear, head set and speech processor worn externally.
-conditioned for profoundly deaf people; when hair cells in the cochlea are damaged.
-requires surgery.
-visible
-post-operative side effects
-expensive w/ ongoing costs
-needs programming/ adjusting.