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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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Perception of Sound Waves01:01

Perception of Sound Waves

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The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
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Unrenewable Cells00:50

Unrenewable Cells

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In humans, the photoreceptor cells of the eye and sensory hair cells of the ear lack stem cells. These cells are thus unrenewable and cannot be replaced when they are damaged or destroyed.
Photoreceptors
The retina is composed of several layers and contains specialized cells called photoreceptors. The photoreceptors (rods and cones) change their membrane potential when stimulated by light energy. There are two types of photoreceptors—rods and cones—which differ in the shape of...
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Sound Intensity Level00:53

Sound Intensity Level

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Humans perceive sound by hearing. The human ear helps sound waves reach the brain, which then interprets the waves and creates the perception of hearing. The loudness of the environment in which a person is located determines whether they can distinguish between different sound sources.
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
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Auditory Pathway01:15

Auditory Pathway

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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.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
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The Cochlea01:13

The Cochlea

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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 28, 2025

Modified Experimental Conditions for Noise-Induced Hearing Loss in Mice and Assessment of Hearing Function and Outer Hair Cell Damage
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Modified Experimental Conditions for Noise-Induced Hearing Loss in Mice and Assessment of Hearing Function and Outer Hair Cell Damage

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Hearing Loss.

Carrie L Nieman1, Esther S Oh1

  • 1Johns Hopkins University School of Medicine, Baltimore, Maryland (C.L.N., E.S.O.).

Annals of Internal Medicine
|November 30, 2020
PubMed
Summary
This summary is machine-generated.

Hearing loss is common in aging adults but often untreated. This review helps internists diagnose and manage hearing loss, improving patient care.

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Area of Science:

  • Gerontology
  • Audiology
  • Internal Medicine

Background:

  • Hearing loss is a prevalent condition affecting the aging population.
  • A significant gap exists in the treatment of hearing loss among adults.
  • Primary care physicians, particularly internists, play a crucial role in addressing hearing loss.

Purpose of the Study:

  • To provide internists with essential knowledge for diagnosing hearing loss.
  • To outline effective management strategies for adult hearing loss.
  • To emphasize the collaborative role of internists with audiologists and otolaryngologists.

Main Methods:

  • This is a review article.
  • It synthesizes current literature on hearing loss diagnosis and management.
  • Focuses on practical information for internists.

Main Results:

  • Hearing loss significantly impacts aging and quality of life.
  • Early diagnosis and intervention are key.
  • Internists can effectively screen for and manage many cases of hearing loss.

Conclusions:

  • Internists are vital in the multidisciplinary approach to hearing loss care.
  • Improving internist education on hearing loss can increase treatment rates.
  • Addressing hearing loss in older adults is crucial for healthy aging.