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Related Concept Videos

Hearing01:31

Hearing

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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.
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Auditory Pathway01:15

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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.
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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.
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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: Nov 29, 2025

Neuro-rehabilitation Approach for Sudden Sensorineural Hearing Loss
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Neuro-rehabilitation Approach for Sudden Sensorineural Hearing Loss

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Approach to hearing loss.

Daniel Newsted1, Emily Rosen2, Bonnie Cooke2

  • 1Doctoral candidate and medical student in the Department of Otolaryngology at Queen's University in Kingston, Ont.

Canadian Family Physician Medecin De Famille Canadien
|November 19, 2020
PubMed
Summary
This summary is machine-generated.

Family physicians can manage hearing loss by assessing deficits and psychological concerns. Early referral for audiological assessment and urgent workup for red flags are crucial for effective patient management and preventing complications.

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Area of Science:

  • Audiology
  • Primary Care Medicine
  • Otolaryngology

Background:

  • Hearing loss is a prevalent global sensory impairment impacting physical, social, and mental well-being.
  • Effective clinical assessment involves differentiating conductive, sensorineural, and mixed hearing loss through history and physical examination.

Purpose of the Study:

  • To equip family physicians with an evidence-based approach for managing patients with hearing loss.
  • To guide primary care providers in identifying and managing hearing loss and its associated psychological effects.

Main Methods:

  • Literature search of MEDLINE and PubMed for English-language hearing loss research, reviews, and guidelines (1980-2020).
  • Analysis of retrieved articles, with a focus on evidence levels (primarily Level II or III).

Main Results:

  • Hearing loss significantly affects overall patient well-being.
  • Urgent referral is necessary for red flag symptoms like sudden unilateral sensorineural hearing loss.
  • Non-urgent cases often require audiological assessment and diagnosis.

Conclusions:

  • Family physicians can manage psychological aspects and conservative treatments for hearing loss.
  • Referral and urgent workup, potentially including imaging, are frequently needed for diagnosis and management to prevent complications.