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Related Concept Videos

The Cochlea01:13

The Cochlea

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.
Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

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 identifying...

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Related Experiment Video

Updated: Jul 21, 2026

Neuro-rehabilitation Approach for Sudden Sensorineural Hearing Loss
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Extended high-frequency audiometry (9,000-20,000 Hz). Usefulness in audiological diagnosis.

Antonio Rodríguez Valiente1, Amaya Roldán Fidalgo1, Ithzel M Villarreal1

  • 1Grupo de Investigación Otológica, Servicio de Otorrinolaringología, Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, España.

Acta Otorrinolaringologica Espanola
|May 31, 2015
PubMed
Summary

Extended high-frequency audiometry aids in the early detection of hearing loss, even when conventional tests appear normal. This advanced hearing test is crucial for identifying potential issues early.

Keywords:
Audiometría con extensión en altas frecuenciasCisplatinCisplatinoExtended high-frequency audiometryHearing lossHipoacusiaPresbiacusiaPresbycusisTinnitus

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Area of Science:

  • Audiology
  • Otoacoustic Emissions
  • Hearing Science

Background:

  • Early detection and treatment of hearing loss are critical to minimize long-term consequences.
  • Conventional audiometry (125-8,000 Hz) is standard but may miss early-stage high-frequency hearing loss.
  • Extended high-frequency audiometry (9,000-20,000 Hz) offers enhanced diagnostic capabilities.

Purpose of the Study:

  • To emphasize the value of extended high-frequency audiometry in audiological examinations.
  • To demonstrate the utility of extended high-frequency audiometry in early hearing loss detection.
  • To advocate for the integration of extended high-frequency audiometry into routine audiological practices.

Main Methods:

  • Review of eleven clinical cases where extended high-frequency audiometry revealed hearing loss not detected by conventional audiometry.
  • Application of extended high-frequency audiometry (9,000-20,000 Hz) alongside standard audiometric evaluations.
  • Analysis of conditions such as ototoxic drug effects, noise exposure, and communication difficulties in noisy environments.

Main Results:

  • Extended high-frequency audiometry successfully identified hearing loss in eleven subjects with normal conventional audiometry results.
  • Early signs of hearing impairment related to ototoxicity, noise exposure, and speech intelligibility were detected.
  • The extended high-frequency range provided crucial diagnostic information in specific clinical scenarios.

Conclusions:

  • Extended high-frequency audiometry is a valuable tool for the early diagnosis of hearing loss.
  • Its application can identify hearing deficits missed by conventional audiometry, particularly in at-risk populations.
  • Routine implementation of extended high-frequency audiometry is recommended for comprehensive audiological assessment.