Cochlear Implants. Ryan S. Clement, PhD Neural Engineering and Applications Laboratory BioE 200: September 18, 2002. Anatomy and Physiology of Hearing. External Ear. Middle Ear Bones. Cochlea. Ear Canal. Ear Drum.
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Ryan S. Clement, PhD
Neural Engineering and Applications Laboratory
BioE 200: September 18, 2002
Middle Ear Bones
Adapted from: http://funsan.biomed.mcgill.ca/~funnell/AudiLab/501/mmem003.html
Traveling Wave Movie
©Howard Hughes Medical Institute
Cochlea Hair Cells
Cochlear cross-section (single turn)
IHCsSensorineural Hearing Loss
view of hair
Safety Considerations Haircells
approvedCurrent Facts About Cochlear Implants
Cochlear Corporation: NucleusTM
* FDA survey of venders 11/2001
(The University of Melbourne)
The Clarion II Implant
Combi 40/40+ Implant
“Never touch a snake with your bare hands.”
The cochlea is arranged such that different regions of the cochlea correspond to different pitches.
Multichannel cochlear implants take advantage of this fact to encode different frequencies in the speech signal.
Cochlear Corporation’s Nucleus Electrode
(created from Bob Shannon and Philip Lizou’s model)
Dorman 2002 Haircells