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The Auditory Ossicles

The Auditory Ossicles

The auditory ossicles of the middle ear transmit sounds from the air as vibrations to the fluid-filled cochlea. The auditory ossicles consist of two malleus (hammer) bones, two incus (anvil) bones, and two stapes (stirrups), one on each side. These bones develop during the fetal stage and are the ones to ossify first. They are fully mature at birth and do not grow afterward.
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...

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.

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.

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: Jun 20, 2026

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention

Published on: December 20, 2024

Bone anchored hearing aids in children.

Ann-Louise McDermott¹, Patrick Sheehan

¹Department of Otolaryngology, The Birmingham Children's Hospital, Birmingham, UK. annlouisemcdermott@msn.com

Current Opinion in Otolaryngology & Head and Neck Surgery

|September 26, 2009

Summary

This summary is machine-generated.

Bone anchored hearing aids (BAHA) offer successful aural rehabilitation for children, improving audiological outcomes and quality of life. Careful patient selection and a multidisciplinary approach are key to managing risks associated with this effective hearing solution.

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Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention

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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:

Otolaryngology
Audiology
Pediatric Surgery

Background:

Bone anchored hearing aids (BAHA) are a widely available aural rehabilitation option for children.
While successful, pediatric BAHA presents unique challenges including medical conditions, anatomy, and trauma risks.
Recent advancements have increased global BAHA service provision for children.

Purpose of the Study:

To review the key issues and considerations for providing BAHA services to children.
To highlight the benefits and challenges of BAHA in pediatric audiological rehabilitation.

Main Methods:

This is a review article, synthesizing current knowledge and practices.
Focuses on analyzing existing data regarding pediatric BAHA outcomes and challenges.

Main Results:

BAHA in children has demonstrated significant improvements in audiological results and quality of life.
Surgical techniques and timing vary, but serious complications remain rare.
Indications for pediatric BAHA have expanded, with successful outcomes reported globally.

Conclusions:

BAHA is an effective aural rehabilitation method for children, enhancing overall quality of life.
Despite being well-tolerated, the procedure carries risks that necessitate careful patient selection.
A multidisciplinary team approach is crucial for successful pediatric BAHA outcomes.