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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.

Hearing

Hearing

When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.

Auditory Pathway

Auditory Pathway

Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...

Anatomy of the Ear

Anatomy of the Ear

Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...

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Related Experiment Video

Updated: Jul 7, 2026

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

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

Published on: March 24, 2023

[Auditory functioning with cochlear implants of bimodal amplification].

Liani Van der Westhuizen¹, Catherine Van Dijk

¹Department van Kommunikasiepatologie, Universiteit van Pretoria.

The South African Journal of Communication Disorders = Die Suid-Afrikaanse Tydskrif Vir Kommunikasieafwykings

|February 5, 2008

Summary

Young adults with cochlear implants report positive auditory and communication benefits from bimodal amplification. However, they experienced challenges with the cosmetic aspects and device care of their hearing technology.

Related Experiment Videos

Last Updated: Jul 7, 2026

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

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

Published on: March 24, 2023

Area of Science:

Audiology
Biomedical Engineering
Speech and Hearing Sciences

Context:

Cochlear implants enhance hearing for individuals with hearing loss.
Bimodal amplification, using a cochlear implant with a hearing aid, offers further benefits.
Young adults' experiences with bimodal amplification are crucial for comprehensive understanding.

Purpose:

To explore young adults' experiences with bimodal amplification.
To assess auditory, communicative, cosmetic, and device handling aspects of bimodal use.
To gather insights for audiologists counseling cochlear implant candidates.

Summary:

A qualitative study surveyed five young adults in the Pretoria Cochlear Implant Program.
Participants reported positive outcomes for hearing and communication with bimodal amplification.
Negative perceptions were noted regarding cosmetic factors and device maintenance.

Impact:

Findings provide valuable information for audiologists to counsel patients on bimodal amplification.
Identifies potential barriers and areas for improvement in bimodal hearing technology.
Contributes to optimizing auditory rehabilitation strategies for young adults.