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Updated: Jul 1, 2025
Infant Auditory Processing and Event-related Brain Oscillations
Published on: July 1, 2015
Effects of Body Position on Cochlear Function in Infants: An Otoacoustic Emission Study
Arash Bayat1,2, Nader Saki3,4, Golshan Mirmomeni4
1Department of Audiology, School of Rehabilitation Sciences, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
Background:
Otoacoustic Emission (OAE) is frequently recorded in various body positions for infants. However, little is available about whether these deviations will produce non-pathological effects on the clinical results. The current study assessed body position's effect on infants' inner ear function.
Methods:
Sixty normally hearing infants participated in an analytical cross-sectional study. Distortion-product OAEs (DPOAEs) were measured in the supine, side-lying, and upright positions. The DPOAE amplitude and signal-to-noise ratio (SNR) were recorded across the 1500 to 6000 Hz range.
Results:
The mean DPOAE amplitude and SNR values were significantly greater in the upright position than supine and side-lying positions (p < 0.05). These differences were more pronounced in the 3000 to 6000 Hz range. The effects of gender and ear asymmetry on DPOAEs were not statistically significant.
Conclusion:
Our findings suggested that the upright position could be regarded as the best position for assessing DPOAEs in infants.
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