Auditory Training Week 4

9/16/25 and 9/18/25

External parts of cochlear implants

Audio processor, transmitting coil, magnet

Internal parts of cochlear implants

Receiver-stimulator, magnet, radio frequency, electrode array

Hybrid cochlear implant

Low frequency hearing through acoustic stimulation (hearing aid) and high frequency hearing through electrical stimulation by cochlear implant

Cochlear implant manufacturers

Cochlear America, Advanced Bionics, and Med-El

Hypoplasia

structure is not fully formed

Aplasia

Absent structure

Cochlear aplasia

failure of cochlea development late in the third week of gestation

Ossification of the cochlea

cochlea is normally filled with fluid but after an infection or surgery it may be replaced by bone.

Auditory nerve hypoplasia

significant narrowing of the VIIIth cranial nerve

Auditory nerve aplasia

the absence of a auditory nerve