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[Otoacoustic emissions and tinnitus]

B Liu1, C Liu, B Song

  • 1Beijing Institute of Otolaryngology.

Zhonghua Er Bi Yan Hou Ke Za Zhi
|January 1, 1996
PubMed
Summary

Objective tinnitus testing using otoacoustic emissions (OAE) reveals cochlear lesions. Otoacoustic emissions can detect early-stage cochlear damage associated with tinnitus, even in cases with normal hearing.

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Area of Science:

  • Audiology
  • Otoacoustic Emissions
  • Tinnitus Research

Context:

  • Tinnitus is a common auditory perception.
  • Objective testing methods for tinnitus are crucial for diagnosis.
  • Otoacoustic emissions (OAE) offer a non-invasive window into cochlear function.

Purpose:

  • To investigate the relationship between objective tinnitus testing and otoacoustic emissions.
  • To explore the utility of Distortion Products Otoacoustic Emission (DPOAE), Spontaneous OAE (SOAE), and Transiently Evoked OAE (TEOAE) in evaluating tinnitus.
  • To determine if OAE can detect early-stage cochlear lesions in patients with tinnitus.

Summary:

  • A study involving 306 ears with tinnitus assessed DPOAE, SOAE, and TEOAE.
  • Results showed no correlation between tinnitus frequency and SOAE.
  • Abnormal DPOAE amplitudes or absence were observed in 94.8% of sensorineural hearing loss cases and 59% of normal hearing cases with tinnitus, particularly around tinnitus frequencies, suggesting cochlear dysfunction.

Impact:

  • Otoacoustic emissions, particularly DPOAE, can serve as an indicator of early-stage cochlear lesions in tinnitus patients.
  • These findings support the use of OAE in the objective assessment and diagnosis of tinnitus.
  • OAE testing may help differentiate tinnitus etiologies and guide management strategies.

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