The effect of body position on transient otoacoustic emission
Several authors had demonstrated that otoacoustic emissions (OAE) change with posture. In 1980, Wilson described frequency shifts of spontaneous OAE in standing vs. supine position, Horst and Ritsma (1984) showed that microstructure of stimulus frequency OAE and auditory threshold change due to positioning. Antonelli and Grandori (1986) demonstrated alteration of the temporal pattern of click evoked OAEs in head-down situation. The aim our study was to determine, if transient OAEs are influenced by body position in a systematic way and if so, whether these alterations can be correlated to modifications of middle-ear impedance.
KeywordsBody Position Acoustic Impedance Otoacoustic Emission Phase Lead Body Position Change
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