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Related Concept Videos

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 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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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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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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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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Infant Auditory Processing and Event-related Brain Oscillations
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Functional auditory disorders.

D M Baguley1, T E Cope2, D J McFerran3

  • 1Department of Audiology, Cambridge University Hospitals, Cambridge, UK.

Handbook of Clinical Neurology
|October 11, 2016
PubMed
Summary
This summary is machine-generated.

Auditory symptom syndromes without a clear organic cause, like nonorganic hearing loss and musical hallucinations, are explored. These conditions may involve abnormal sensory or brain activity, with their impact often amplified by heightened salience.

Keywords:
acoustic shockdisorders of auditory processingdisorders of loudness perceptionlow-frequency noise complaintmisophoniamusical hallucinationnonorganic hearing losspsychogenictinnitus

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Area of Science:

  • Neuroscience
  • Audiology
  • Psychiatry

Background:

  • Auditory symptom syndromes can manifest without a clear organic basis.
  • Conditions like nonorganic hearing loss and musical hallucinations present diverse demographics and require distinct management.
  • These syndromes may stem from peripheral sensory pathology or altered brain network activity, with their impact exacerbated by overamplification of salience.

Purpose of the Study:

  • To outline definitions, demographics, investigations, mechanisms, and treatments for auditory symptom syndromes.
  • To evaluate the extent to which these syndromes can be considered functional.
  • To highlight the need for integrating behavioral and cognitive psychology with auditory neuroscience for improved treatments.

Main Methods:

  • Review of auditory symptom syndromes, including nonorganic hearing loss and musical hallucination.
  • Analysis of demographic data, investigative approaches, and proposed mechanisms.
  • Examination of current treatment strategies and their functional basis.

Main Results:

  • Syndromes vary in their underlying pathology and patient populations.
  • The concept of 'functional' in audiology is evolving beyond equating it with malingering.
  • Current treatments are often pragmatic but require further development.

Conclusions:

  • Auditory symptom syndromes without organic basis necessitate a multidisciplinary approach.
  • Integrating psychological insights with auditory neuroscience is crucial for advancing treatment.
  • A shift in perspective is needed to address these complex conditions effectively.