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[Research on the basic properties of spontaneous otoacoustic emissions]
Bo Liu1, Chan Liu, Liansheng Guo
1Beijing Institute of Otolaryngology, Department of Otorhinolaryngology, Affiliated Beijing Tongren Hospital of Capital University of Medical Sciences, Beijing, 100730, China.
Objective:
To record and analyze the basic properties of spontaneous otoacoustic emission (SOAE) and to study the application of SOAE.
Method:
Forty cases (80 ears) with normally hearing subjects and 96 cases with abnormal hearing subjects were tested by ILO92 Otodynamics Analyzer.
Result:
(1) SOAE frequencies ranged from about 0.5 kHz to 6 kHz, it's amplitudes distributed between -28 and 6 dB SPL; (2) 49% had SOAE and there were no significant difference in sexuality in normal hearing subjects. During long duration observation, frequency of SOAE was no change; (3) Amplitude of SOAE could be suppressed by contralateral white noise; (4) There were some difference in different hearing loss group for SOAE.
Conclusion:
The presence of SOAE indicated that there is a better function for out hair cells of cochlear.
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