Related Experiment Videos
Otoacoustic emissions in human ears: normative findings
G K Martin1, R Probst, B L Lonsbury-Martin
1Department of Otorhinolaryngology and Communicative Sciences, Baylor College of Medicine, Houston, Texas.
Ear and Hearing
|April 1, 1990
Summary
Otoacoustic emissions, which reflect inner ear function, can be categorized into four subtypes based on eliciting stimuli. This review covers recording methods and findings for these emissions in normally hearing individuals.
Area of Science:
- Audiology
- Otoacoustic Emissions
- Auditory Neuroscience
Background:
- Otoacoustic emissions (OAEs) are sounds generated by the cochlea.
- OAEs provide insights into outer hair cell function.
- Understanding OAEs is crucial for hearing diagnostics.
Purpose of the Study:
- To categorize otoacoustic emissions based on eliciting stimuli.
- To review recording methods for different OAE subtypes.
- To present findings in normally hearing humans for each OAE type.
Main Methods:
- Classification of OAEs into two main classes.
- Identification of four discrete subtypes: spontaneous, transiently evoked, stimulus-frequency, and distortion-product OAEs.
- Review of established recording techniques and typical results.
Main Results:
- Detailed description of spontaneous otoacoustic emissions (SOAEs).
- Overview of transiently evoked otoacoustic emissions (TEOAEs) and their clinical relevance.
- Explanation of stimulus-frequency otoacoustic emissions (SFOAEs) and distortion-product otoacoustic emissions (DPOAEs).
Conclusions:
- Otoacoustic emissions offer a non-invasive window into cochlear mechanics.
- Standardized methods allow for reliable measurement of different OAE subtypes.
- Findings in normal hearing provide a baseline for clinical audiological assessments.