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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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Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

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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.
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...
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Perception of Sound Waves01:01

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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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Anatomy of the Ear01:16

Anatomy of the Ear

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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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Role of Communication in the Nursing Process III: Evaluation and Documentation01:08

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A successful patient outcome depends mainly on the evaluation stage of the nursing process. Evaluation determines effectiveness by reviewing what was done previously after the completion of nursing interventions. Every time a healthcare professional steps in or administers treatment, they must reassess or evaluate the action to ensure the intended result. During the evaluation phase, there are three probable patient outcomes:
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Auditory Perception01:17

Auditory Perception

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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...
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Related Experiment Video

Updated: Apr 7, 2026

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

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Hearing Loss: Diagnosis and Evaluation.

Philip Zazove1, Samuel R Atcherson2, Christopher Moreland3

  • 1University of Michigan Department of Family Medicine, 1150 W. Medical Center Dr M7300 Med Sci I SPC 5625, Ann Arbor, MI 48109-5625.

FP Essentials
|July 11, 2015
PubMed
Summary
This summary is machine-generated.

Hearing loss affects many, particularly older adults and veterans, but impacts younger individuals too. Early screening and treatment, like hearing aids, significantly improve quality of life and reduce negative outcomes.

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Area of Science:

  • Audiology
  • Public Health
  • Gerontology

Background:

  • Hearing loss is a prevalent disability in the U.S., affecting men, the elderly, and veterans disproportionately, but increasingly seen in younger adults.
  • Common types include sensorineural, conductive, and mixed hearing loss, with age-related hearing loss (presbycusis) being the most frequent adult cause.
  • Untreated hearing loss leads to adverse effects such as social isolation, depression, reduced income, and higher unemployment rates.

Purpose of the Study:

  • To highlight the prevalence and impact of hearing loss.
  • To emphasize the benefits of early detection and intervention.
  • To advocate for increased screening and treatment rates for hearing loss.

Main Methods:

  • Review of current literature on hearing loss prevalence, types, and etiologies.
  • Analysis of the consequences of untreated hearing loss and the benefits of interventions like hearing aids.
  • Discussion of recommended screening protocols for infants, children, and adults with risk factors.

Main Results:

  • At least 75% of individuals with hearing loss remain untreated.
  • Hearing aid use is associated with reduced disability, cognitive decline, and psychosocial distress.
  • Effective screening strategies exist for all age groups, including the 1-3-6 goal for infants.

Conclusions:

  • Universal infant screening and targeted screening for at-risk children and adults are crucial.
  • Establishing a physician-patient relationship can improve patient disclosure of hearing loss.
  • Prompt audiometry by specialists is recommended for all suspected cases of hearing loss.