Related Experiment Videos
Interrelation of different oto-acoustic emissions.
The Journal of the Acoustical Society of America
|April 1, 1984
Summary
Spontaneous and evoked otoacoustic emissions share frequency spacing characteristics. These findings link spontaneous, delayed, and synchronous evoked emissions to hearing threshold fine structure.
Area of Science:
- Audiology
- Otoacoustic Emissions
- Hearing Science
Background:
- Otoacoustic emissions (OAEs) are sounds generated by the inner ear.
- Spontaneous OAEs (SOAEs) occur without external stimulation.
- Evoked OAEs (EOAEs) are responses to acoustic stimuli.
Purpose of the Study:
- To investigate the relationship between spontaneous and evoked otoacoustic emissions.
- To analyze the frequency characteristics of different OAE types.
- To explore the connection between OAEs and hearing threshold fine structure.
Main Methods:
- Measuring sound pressure amplitude and phase in the ear canal.
- Using pure-tone stimulation across various frequencies.
- Comparing frequency spacing of spontaneous, delayed, and synchronous evoked emissions.
Main Results:
- Frequency spacing of evoked emission maxima closely matches that of spontaneous emissions.
- Delayed evoked emissions exhibit similar frequency spacing patterns.
- All OAE categories (spontaneous, delayed, synchronous evoked) are interrelated.
Conclusions:
- A strong relationship exists between spontaneous and evoked otoacoustic emissions.
- The fine structure of hearing threshold is linked to these OAE characteristics.
- OAEs provide insights into cochlear mechanics and auditory function.