Abstract
This study examined the effect of three different body positions on distortion-product otoacoustic emission (DPOAE) amplitude and noise levels with multiple primary tone pairs simultaneously-presented to 36 normal-hearing female human adults. Other studies have demonstrated that the simultaneously presented tone pairs method shows clinical promise as a screener, but the sequential method remains in widespread clinical use. Postural changes have been suggested to have an effect not only on DPOAEs, but also transient-evoked OAEs and stimulus-frequency OAEs. DPOAE amplitude and noise levels were recorded in seated, supine, and side-lying positions to the following order of simultaneously-presented tone pairs relative to the f2 frequencies: 1187, 2375, and 4812 Hz; 1500, 3000, and 6062 Hz; and 1875, 3812, and 7625 Hz. No DPOAE could be detected reliably at 7625 Hz as result of poor signal-to-noise ratio. For remaining DPOAEs, statistical analyses revealed that amplitudes were not significantly different among the three body positions. However, at 1500 Hz and below, body position did have a statistically significant effect on noise levels though they are likely clinically negligible. Except at 7625 Hz, results suggest that DPOAEs recorded using a simultaneously presented tone pairs appear to be comparably recorded regardless of an individual’s body position.
Highlights
This study examined the effect of three different body positions onThe utility of distortion-product otoacoustic emissions (DPOAEs) as distortion-product otoacoustic emission (DPOAE) amplitude and noise a non-invasive, objective assessment of cochlear function has come a levels with multiple primary tone pairs simultaneously-presented to 36 normal-hearing female human adults
The results suggest that body position may significantly different from 7625 Hz in the SE and SL positions
In other levels at 1875 Hz were significantly different from 3812 Hz in the SL words, once Go was clicked to begin the measurements, the computer position.The two-way RMANOVA revealed a significant main effect recorded data for all three sets of simultaneous tone pairs in a sequenfor body position (F (2, 70) = 7.424, P
Summary
This study examined the effect of three different body positions onThe utility of distortion-product otoacoustic emissions (DPOAEs) as distortion-product otoacoustic emission (DPOAE) amplitude and noise a non-invasive, objective assessment of cochlear function has come a levels with multiple primary tone pairs simultaneously-presented to 36 normal-hearing female human adults. This study examined the effect of three different body positions on. Postural changes have been suggested to have an effect on DPOAEs, and transient-evoked OAEs and stimue lus-frequency OAEs. DPOAE amplitude and noise levels were recorded s in seated, supine, and side-lying positions to the following order of simultaneously-presented tone pairs relative to the f2 frequencies:. For remaining DPOAEs, statistical analyses c revealed that amplitudes were not significantly different among the r three body positions. At 1500 Hz and below, body position did e have a statistically significant effect on noise levels though they are likely clinically negligible. Except at 7625 Hz, results suggest that m DPOAEs recorded using a simultaneously presented tone pairs appear to be comparably recorded regardless of an individual’s body position
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