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The Cochlea

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: Jun 24, 2026

Data Acquisition and Analysis In Brainstem Evoked Response Audiometry In Mice

Data Acquisition and Analysis In Brainstem Evoked Response Audiometry In Mice

Published on: May 10, 2019

Exploring the relationship between physiological measures of cochlear and brainstem function.

S Dhar¹, R Abel, J Hornickel

¹Roxelyn and Richard Pepper Department of Communication Sciences and Disorders, Northwestern University, 2240 Campus Drive, Evanston, IL 60208, USA. s-dhar@northwestern.edu

Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology

|April 7, 2009

Summary

This summary is machine-generated.

Objective measures of hearing, distortion product otoacoustic emissions (DPOAEs) and speech-evoked auditory brainstem responses (sABRs), show significant relationships between cochlear function and brainstem responses in normal-hearing adults.

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Last Updated: Jun 24, 2026

Data Acquisition and Analysis In Brainstem Evoked Response Audiometry In Mice

Data Acquisition and Analysis In Brainstem Evoked Response Audiometry In Mice

Published on: May 10, 2019

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

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

Published on: January 9, 2019

Area of Science:

Auditory Neuroscience
Audiology
Otoacoustic Emissions

Background:

Otoacoustic emissions (OAEs) and speech-evoked auditory brainstem responses (sABRs) are objective measures of peripheral auditory function.
While individually well-studied, the relationship between OAEs and sABRs is not well understood.

Purpose of the Study:

To investigate the interdependence between distortion product otoacoustic emissions (DPOAEs) and speech-evoked auditory brainstem responses (sABRs) in normal-hearing adults.
To explore correlations between DPOAE characteristics and sABR timing and frequency encoding.

Main Methods:

Recorded DPOAEs and sABRs from 28 normal-hearing adults.
Correlated DPOAE Strength and Structure with five sABR measures (Onset, Spectrotemporal, Harmonics, Envelope Boundary, Pitch).

Main Results:

DPOAE Strength correlated significantly with sABR Spectrotemporal and Harmonics measures.
DPOAE Structure correlated significantly with sABR Envelope Boundary.
No significant relationship was found between DPOAEs and sABR Pitch.

Conclusions:

Specific aspects of sABRs covary with cochlear function measured by DPOAEs.
Findings support parallel analysis of cochlear and brainstem function for improved clinical assessment of hearing and language disorders.