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[Frequency-dependent cochlear microphonics in inner ear hearing loss with various pitch thresholds]
N Marangos1, G Hesse, A Mausolf
1HNO-Klinik, Medizinischen Hochschule Hannover.
HNO
|January 1, 1989
Summary
Cochlear microphonics (CM) recordings show a strong link between low-to-mid frequency hearing ability and audiogram results. This objective measure aids in assessing hearing loss in clinical settings.
Area of Science:
- Otoacoustic Emissions
- Auditory Electrophysiology
- Neuroscience
Context:
- Promontory recordings measure cochlear microphonics (CM) in response to auditory stimuli.
- Evaluations were conducted on individuals with normal hearing and varying degrees of sensorineural hearing loss.
- Stimulation involved 0.5, 1, and 2 kHz tone bursts at 120 dB SPL.
Purpose:
- To investigate the correlation between frequency-specific CM amplitudes and pure-tone audiogram configurations.
- To determine the clinical utility of CM recordings for assessing hearing function.
Summary:
- A significant correlation was identified between frequency-related CM amplitudes and the pure-tone audiogram.
- CM recordings provide objective data on hearing capabilities, particularly at low and middle frequencies.
- The findings suggest CM assessment is a relevant tool in clinical audiology.
Impact:
- Enhances objective assessment of hearing loss, complementing traditional audiometry.
- Offers valuable insights into cochlear function and its relationship to hearing perception.
- Supports more accurate diagnosis and management of hearing impairments.