Related Experiment Videos
Distortion product emissions and sensorineural hearing loss
1Department of Otolaryngology, University of Minnesota, Minneapolis.
The Journal of Otolaryngology
|December 1, 1989
Summary
Distortion product emissions (DPEs) can objectively predict hearing thresholds. This non-invasive audiology test correlates DPEs with auditory thresholds, offering new insights into cochlear function.
Area of Science:
- Audiology
- Otoacoustic Emissions
- Auditory Physiology
Background:
- Distortion product emissions (DPEs) are closely related to outer hair cell function.
- Outer hair cell function is critical for normal auditory thresholds.
Purpose of the Study:
- To correlate frequency-specific DPE measurements with auditory thresholds.
- To assess the predictive accuracy of DPEs for hearing sensitivity.
Main Methods:
- Measurements of DPEs were taken across seven frequency regions (700 Hz to 6 kHz).
- Auditory thresholds were assessed in 21 ears, including ears with normal hearing and sensorineural hearing loss.
Main Results:
- DPE measurements demonstrated a strong correlation with frequency-specific auditory thresholds.
- DPE measures accurately predicted auditory thresholds within 10 dB across a broad range (0-60 dB SPL).
Conclusions:
- DPEs offer a promising objective, non-invasive method for assessing auditory thresholds.
- DPE measurements provide valuable, complementary information on cochlear function for clinicians and researchers.