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When is a cochlear implant used?(a) When the sensory hair in the auditory canal have been damaged(b) When the tympanic membrane has been damaged(c) When the ossicular chain has been damaged(d) When the fluid in the eustancian tube has been dis-balancedThe question was posed to me during an interview for a job.The doubt is from Artificial Organs in division Rehabilitation and Recovery of Clinical Science

Answer»

Right answer is (a) When the sensory hair in the auditory canal have been damaged

Easy explanation: The sound FINALLY reaches the cochlea of the ear which has FINE COCHLEAR hair. These are receptors of sound and they convert the sound impulses into electrical impulses which are received by the auditory nerve and then taken back to the temporal lobe to the brain. When these cochlear hair gets damaged, a cochlear IMPLANT is USED.



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