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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.

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...

Perceiving Loudness, Pitch, and Location

Perceiving Loudness, Pitch, and Location

The human brain perceives pitch through two primary mechanisms reflected in place theory and frequency theory. Each mechanism describes how sound waves are interpreted as specific pitches by the brain, offering insights into the intricate processes of auditory perception.
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by identifying...

Auditory Perception

Auditory Perception

The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the cochlea, a...

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...

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Related Experiment Video

Updated: May 28, 2026

An Automated System for Sound Localization Testing in Hearing-Impaired Listeners

An Automated System for Sound Localization Testing in Hearing-Impaired Listeners

Published on: March 13, 2026

Teleaudiology.

Mark Krumm¹, Mark J Syms

¹North East Ohio AuD Consortium (NOAC), Kent State University, A104 Music and Speech Building, Kent, OH 44242, USA.

Otolaryngologic Clinics of North America

|October 29, 2011

Summary

This summary is machine-generated.

Teleaudiology offers flexible care delivery through synchronous and asynchronous methods. This technology is effective for various audiological services, but payment policies require clarification.

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Area of Science:

Audiology
Healthcare Technology
Telemedicine

Background:

Teleaudiology is emerging as a practical method for healthcare delivery.
It can be implemented using synchronous (real-time) or asynchronous (store-and-forward) approaches.
Hybrid models combine both synchronous and asynchronous delivery for comprehensive care.

Purpose of the Study:

To explore the viability and applications of teleaudiology.
To highlight the different delivery modes within teleaudiology.
To identify current challenges in teleaudiology implementation.

Main Methods:

Review of teleaudiology applications.
Discussion of synchronous and asynchronous delivery models.
Analysis of current technological integration in audiology.

Main Results:

Teleaudiology is applicable to a range of audiological services, including otoscopy, audiometry, immitance testing, cochlear implant programming, and newborn hearing screening.
Both synchronous and asynchronous teleaudiology methods have proven effective.
Hybrid delivery models offer a flexible approach to care.

Conclusions:

Teleaudiology is a functional and effective technology for delivering audiological services.
Further development is needed to address unclear reimbursement structures.
The integration of teleaudiology has the potential to expand access to hearing healthcare.