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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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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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Auditory Perception01:17

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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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Perceiving Loudness, Pitch, and Location01:21

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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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The Auditory Ossicles01:11

The Auditory Ossicles

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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...
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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.
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Tinnitus Update.

Byung In Han1, Ho Won Lee2, Sanghyo Ryu3

  • 1Do Neurology Clinic, Daegu, Korea.

Journal of Clinical Neurology (Seoul, Korea)
|January 22, 2021
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Summary
This summary is machine-generated.

Tinnitus, often linked to hearing loss, can stem from various dysfunctions. Management focuses on symptom relief and reducing associated distress using therapies like CBT and sound therapy.

Keywords:
hearing losstinnitustreatment

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Area of Science:

  • Audiology
  • Neuroscience
  • Otolaryngology

Background:

  • Tinnitus is a complex auditory perception often associated with hearing loss, somatosensory, or auditory cortex dysfunction.
  • While hearing loss is the most common cause, serious underlying pathologies are rare.
  • The relationship between hearing loss and tinnitus is not always direct, with mechanisms like inhibitory gating proposed.

Purpose of the Study:

  • To provide an update on tinnitus for clinicians specializing in tinnitus services.
  • To review the causes, mechanisms, and current treatment options for tinnitus.

Main Methods:

  • Literature review and synthesis of current knowledge on tinnitus.
  • Discussion of audiological findings and potential underlying pathologies.
  • Overview of established and emerging treatment modalities.

Main Results:

  • Hearing loss is the primary cause of tinnitus, though not universally present in all sufferers.
  • Dysfunctions in the somatosensory system and auditory cortex can also contribute to tinnitus.
  • Standard audiological evaluations may not detect subtle hearing impairments linked to tinnitus.

Conclusions:

  • Tinnitus management should prioritize symptomatic relief and addressing patient distress.
  • A multimodal approach combining pharmacotherapy, education, counseling, cognitive behavioral therapy, and sound therapy is recommended.
  • Further research into the nuanced relationship between hearing impairment and tinnitus is warranted for improved clinical strategies.