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The Cochlea01:13

The Cochlea

The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.

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Related Experiment Video

Updated: Jul 14, 2026

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
06:04

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

Published on: March 24, 2023

The surprising performance of present-day cochlear implants.

Blake S Wilson1, Michael F Dorman

  • 1RTI International, Research Triangle Park, NC 27709, USA. bsw@rti.org

IEEE Transactions on Bio-Medical Engineering
|June 8, 2007
PubMed
Summary

The Clarion CII cochlear implant demonstrated speech reception performance comparable to normal-hearing individuals across most tests. This suggests the implant effectively restores auditory function despite its simplified physiological mimicry.

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Cochlear Implant Surgery and Electrically-evoked Auditory Brainstem Response Recordings in C57BL/6 Mice
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Cochlear Implant Surgery and Electrically-evoked Auditory Brainstem Response Recordings in C57BL/6 Mice

Published on: January 9, 2019

Related Experiment Videos

Last Updated: Jul 14, 2026

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
06:04

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

Published on: March 24, 2023

Cochlear Implant Surgery and Electrically-evoked Auditory Brainstem Response Recordings in C57BL/6 Mice
09:06

Cochlear Implant Surgery and Electrically-evoked Auditory Brainstem Response Recordings in C57BL/6 Mice

Published on: January 9, 2019

Area of Science:

  • Audiology
  • Neuroscience
  • Biomedical Engineering

Background:

  • Evaluating the efficacy of the Clarion CII implant for speech understanding.
  • Comparing implant recipient performance to individuals with normal hearing.

Observation:

  • A single recipient of the Clarion CII implant underwent extensive speech reception testing.
  • A control group of six normal-hearing subjects completed the identical test battery.

Findings:

  • The Clarion CII implant recipient achieved scores statistically indistinguishable from normal-hearing subjects on seven out of nine speech reception tests.
  • Performance was equivalent even on the most challenging test typically used in clinical settings.
  • These results were observed despite the implant's rudimentary replication of normal auditory physiology.

Implications:

  • The Clarion CII implant offers significant functional auditory restoration, approaching normal hearing capabilities.
  • These findings support the clinical utility of cochlear implants for improving speech intelligibility.
  • Further research may explore optimizing implant design for even more comprehensive physiological mimicry.