`ISRN OtolaryngologyVolume 2013 (2013), Article ID 379719, 9 pageshttp://dx.doi.org/10.1155/2013/379719`
Clinical Study

## DPOAE Intensity Increase at Individual Dominant Frequency after Short-Term Auditory Exposure

Department of Otolaryngology and Head and Neck Surgery, Medical and Health Science Center, University of Debrecen, Debrecen 403, Hungary

Received 3 July 2013; Accepted 6 August 2013

Academic Editors: C. Y. Chien, G. G. Ferri, and C.-H. Wang

Copyright © 2013 Judit Bakk et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

1. A. W. Gummer, J. Meyer, G. Frank, M. P. Scherer, and S. Preyer, “Mechanical transduction in outer hair cells,” Audiology and Neuro-Otology, vol. 7, no. 1, pp. 13–16, 2002.
2. D. T. Kemp, “Stimulated acoustic emissions from within the human auditory system,” Journal of the Acoustical Society of America, vol. 64, no. 5, pp. 1386–1391, 1978.
3. W. E. Brownell, “Outer hair cell electromotility and otoacoustic emissions,” Ear and Hearing, vol. 11, no. 2, pp. 82–92, 1990.
4. P. Dallos, “Cochlear amplification, outer hair cells and prestin,” Current Opinion in Neurobiology, vol. 18, no. 4, pp. 370–376, 2008.
5. D. Dulon, G. Zajic, and J. Schacht, “Differential motile response of isolated inner and outer hair cells to stimulation by potassium and calcium ions,” Hearing Research, vol. 52, no. 1, pp. 225–232, 1991.
6. D. Z. Z. He and P. Dallos, “Somatic stiffness of cochlear outer hair cells is voltage-dependent,” Proceedings of the National Academy of Sciences of the United States of America, vol. 96, no. 14, pp. 8223–8228, 1999.
7. T. J. Batta, G. Panyi, R. Gáspár, and I. Sziklai, “Active and passive behaviour in the regulation of stiffness of the lateral wall in outer hair cells of the guinea-pig,” Pflugers Archiv, vol. 447, no. 3, pp. 328–336, 2003.
8. R. Borkó, T. J. Batta, and I. Sziklai, “Electromotile performance of isolated outer hair cells during slow motile shortening,” Acta Oto-Laryngologica, vol. 125, no. 5, pp. 547–551, 2005.
9. R. Borkó, T. J. Batta, and I. Sziklai, “Slow motility, electromotility and lateral wall stiffness in the isolated outer hair cells,” Hearing Research, vol. 207, no. 1-2, pp. 68–75, 2005.
10. M. Szönyi, D. Z. Z. He, O. Ribári, I. Sziklai, and P. Dallos, “Intracellular calcium and outer hair cell electromotility,” Brain Research, vol. 922, no. 1, pp. 65–70, 2001.
11. T. Ren and A. L. Nuttall, “Extracochlear electrically evoked otoacoustic emissions: a model for in vivo assessment of outer hair cell electromotility,” Hearing Research, vol. 92, no. 1-2, pp. 178–183, 1995.
12. G. I. Frolenkov, F. Mammano, and B. Kachar, “Regulation of outer hair cell cytoskeletal stiffness by intracellular Ca2+: underlying mechanism and implications for cochlear mechanics,” Cell Calcium, vol. 33, no. 3, pp. 185–195, 2003.
13. J. G. Kiss, F. Tóth, L. Rovó et al., “Distortion-product otoacoustic emission (DPOAE) following pure tone and wide-band noise exposures,” Scandinavian Audiology, Supplement, vol. 30, no. 52, pp. 138–140, 2001.
14. C. Abel, A. Wittekindt, and M. Kössl, “Contralateral acoustic stimulation modulates low-frequency biasing of DPOAE: efferent influence on cochlear amplifier operating state?” Journal of Neurophysiology, vol. 101, no. 5, pp. 2362–2371, 2009.
15. D. O. Kim, P. A. Dorn, S. T. Neely, and M. P. Gorga, “Adaptation of distortion product otoacoustic emission in humans,” Journal of the Association for Research in Otolaryngology, vol. 2, no. 1, pp. 31–40, 2001.
16. M. K. Bassim, R. L. Miller, E. Buss, and D. W. Smith, “Rapid adaptation of the 2f1-f2 DPOAE in humans: binaural and contralateral stimulation effects,” Hearing Research, vol. 182, no. 1-2, pp. 140–152, 2003.
17. H. Althen, A. Wittekindt, B. Gaese, M. Kössl, and C. Abel, “Effect of contralateral pure tone stimulation on distortion emissions suggests a frequency-specific functioning of the efferent cochlear control,” Journal of Neurophysiology, vol. 107, no. 7, pp. 1962–1969, 2012.
18. T.-C. Liu, C.-J. Hsu, J.-H. Hwang, F.-Y. Tseng, and Y.-S. Chen, “Effects of alcohol and noise on temporary threshold shift in guinea pigs,” ORL, vol. 66, no. 3, pp. 124–129, 2004.
19. G. D. Housley and J. F. Ashmore, “Direct measurement of the action of acetylcholine on isolated outer hair cells of the guinea pig cochlea,” Proceedings of the Royal Society B, vol. 244, no. 1310, pp. 161–167, 1991.
20. P. A. Fuchs and B. W. Murrow, “A novel cholinergic receptor mediates inhibition of chick cochlear hair cells,” Proceedings of the Royal Society B, vol. 248, no. 1, pp. 35–40, 1992.
21. W. Zhao and S. Dhar, “Fast and slow effects of medial olivocochlear efferent activity in humans,” PLoS One, vol. 6, no. 4, Article ID e18725, 2011.
22. D. Dulon and J. Schacht, “Motility of cochlear outer hair cells,” American Journal of Otology, vol. 13, no. 2, pp. 108–112, 1992.
23. T. J. Batta, G. Panyi, A. Szucs, and I. Sziklai, “Regulation of the lateral wall stiffness by acetylcholine and GABA in the outer hair cells of the guinea pig,” European Journal of Neuroscience, vol. 20, no. 12, pp. 3364–3370, 2004.
24. B. L. Lonsbury-Martin and G. K. Martin, “Distortion-product otoacoustic emission in populations with normal hearing sensitivity—measurement of DPOAE,” in Otoacoustic Emissions Clinical Applications, M. S. Robinette and T. J. Glattke, Eds., Thieme, Stuttgart, Germany, 2007.
25. A. B. Elgoyhen and E. Katz, “The efferent medial olivocochlear-hair cell synapse,” Journal of Physiology Paris, vol. 106, pp. 47–56, 2012.
26. T. S. Sridhar, M. C. Brown, and W. F. Sewell, “Unique postsynaptic signaling at the hair cell efferent synapse permits calcium to evoke changes on two time scales,” Journal of Neuroscience, vol. 17, no. 1, pp. 428–437, 1997.
27. N. P. Cooper and J. J. Guinan Jr., “Separate mechanical processes underlie fast and slow effects of medial olivocochlear efferent activity,” Journal of Physiology, vol. 548, no. 1, pp. 307–312, 2003.
28. F. Mammano, M. Bortolozzi, S. Ortolano, and F. Anselmi, “Ca2+ signaling in the inner ear,” Physiology, vol. 22, no. 2, pp. 131–144, 2007.
29. H. Spoendlin, “The innervation of the organ of Corti,” Journal of Laryngology and Otology, vol. 81, no. 7, pp. 717–738, 1967.
30. P. E. Stopp and S. D. Comis, “Afferent and efferent innervation of the guinea-pig cochlea: a light microscopic and histochemical study,” Neuroscience, vol. 3, no. 12, pp. 1197–1206, 1978.
31. S. F. Maison, T. W. Rosahl, G. E. Homanics, and M. C. Liberman, “Functional role of GABAergic innervation of the cochlea: phenotypic analysis of mice lacking GAB${\text{A}}_{\text{A}}$ receptor subunits α1, α2, α5, α6, β2, β3, or δ,” Journal of Neuroscience, vol. 26, no. 40, pp. 10315–10326, 2006.
32. M. Eybalin and R. A. Altschuler, “Immunoelectron microscopic localization of neurotransmitters in the cochlea,” Journal of Electron Microscopy Technique, vol. 15, no. 3, pp. 209–224, 1990.
33. M. Eybalin, C. Parnaud, M. Geffard, and R. Pujol, “Immunoelectron microscopy identifies several types of GABA-containing efferent synapses in the guinea-pig organ of Corti,” Neuroscience, vol. 24, no. 1, pp. 29–38, 1988.
34. P. K. Plinkert, H. Mohler, and H. P. Zenner, “A subpopulation of outer hair cells possessing GABA receptors with tonotopic organization,” Archives of Oto-Rhino-Laryngology, vol. 246, no. 6, pp. 417–422, 1989.