The effect of side-lying position on the parameters of transient evoked otoacoustic emission
Background and Aim: One of the non-pathological factors affect otoacoustic emissions is body position. In the present study, the effect of side-lying position on evoked otoacoustic emission properties and related existing assumptions were investigated.
Methods: The cross-sectional study was performed on 42 adults aged 18-25 years. The results of Transient-evoked otoacoustic emissions (TEOAEs) test were recorded and analyzed in sitting, supine, and side-lying (Ipsi and Contra) positions to compare the total response level, whole wave reproducibility, signal to noise ratio in frequencies of 1 to 5 KHz, and the lasting time of the test.
Results: Changing of the body position had a significant effect on total response level, whole wave reproducibility, and lasting time of the test (p<0.010) while this effect on signal to noise ratio was just found at 1 KHz (p<0.001). The highest total response level and lowest lasting time of the test values were observed in side-lying (contra) position (p<0.050).
Conclusion: Side-lying position (contra) is the best position for the TEOAEs test. The results of this study partly confirm intracranial pressure change hypothesis that intracochlear fluid pressure increase in the auditory system; although there are contradictions in this field.
2. Phillips AJ, Farrell G. The effect of posture on three objective audiological measures.Br J Audiol. 1992;26(6):339-45.
3. de Kleine E, Wit HP, van Dijk P, Avan P. The behavior of spontaneous otoacoustic emissions during and after postural changes. J Acoust Soc Am. 2000;107(6):3308-16.
4. de Kleine E, Wit HP, Avan P, van Dijk P. The behavior of evoked otoacoustic emissions during and after postural changes. J Acoust Soc Am. 2001;110(2):973-80.
5. Büki B, Chomicki A, Dordain M, Lemaire JJ, Wit HP, Chazal J, et al. Middle-ear influence on otoacoustic emissions. II: contributions of posture and intracranial pressure. Hear Res. 2000;140(1-2):202-11.
6. Emery JR, Peabody JL. position affects intracranial pressure in newborn infants. J Pediatr. 1983;103(6):950-3.
7. Antonelli A, Grandori F. Long term stability, influence of the head position and modelling considerations for evoked otoacoustic emissions. Scand Audio Suppl. 1986;25:97-108.
8. Meric C, Collet L. Comparative influence of repeated measurement and of attention evoked otoacoustic emissions. Acta Otolaryngol. 1993;113(4):471-7.
9. Büki B, de Kleine E, Wit HP, Avan P. Detection of intracochlear and intracranial pressure changes with otoacoustic emissions: A gerbil model. Hear Res. 2002;167(1-2):180-91.
10. Buki B, Avan P, Lemaire JJ, Dordain M, Chazal J. Otoacoustic emissions: a new tool for monitoring intracranial pressure changes through stapes displacements. Hear Res. 1996;94(1-2):125-39.
11. Büki B, Giraudet F, Avan P. Non-invasive measurements of intralabyrinthine pressure changes by electrocochleography and otoacoustic emissions. Hear Res. 2009;251(1-2):51-9.
12. Voss SE, Adegoke MF, Horton NJ, Sheth KN, Rosand J, Shera CA. Posture systematically alters ear-canal reflectance and DPOAE properties. Hear Res. 2010;263(1-2):43-51.
13. Froehlich P, Collet L, Morgan A. Transiently evoked otoacoustic emission amplitudes change with changes of directed attention. Physiol Behav. 1993;53(4):679-/82.
14. Traboulsi R, Avan P. Transmission of infrasonic pressure waves from cerebrospinal to intralabyrinthine fluids through the human cochlear aqueduct: non-invasive measurements with otoacoustic emissions. Hear Res. 2007;233(1-2):30-9.
15. Voss SE, Horton NJ, Tabucchi TH, Folowosele FO, Shera CA. Posture induced changes in distortion-product otoacoustic emissions and the potential for noninvasive monitoring of changes in intracranial pressure. Neurocrit Care. 2006;4(3):251-7.
16. Frank AM, Alexiou C, Hulin P, Janssen T, Arnold W, Trappe AE. Non-invasive measurement of intracranial pressure changes by otoacoustic emissions (OAEs)- a report of preliminary data. Zentralbl Neurochir. 2000;61(4):177-80.
17. Toole JF. Effects of change of head, limb and body position on cephalic circulation. N Eng J Med. 1968;279(6):307-11.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.