Table of Contents
ISRN Otolaryngology
Volume 2012 (2012), Article ID 850629, 7 pages
http://dx.doi.org/10.5402/2012/850629
Research Article

Vestibular Hearing and Speech Processing

1Department of Audiology, School of Rehabilitation, Tehran University of Medical Sciences, Tehran 16997-387, Iran
2American Academy of Otolaryngology-Head and Neck Surgery Rockford, OSF Saint Anthony Medical Center, IL, USA
3Department of Statistic, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran
4Department of Otorhinolaryngology/Head and Neck Surgery, School of Medicine, Hamadan University of Medical Sciences, Hamadan 16657-696, Iran
5ENT-Head and Neck Research Center, Hazrat Rasoul Akram Hospital, Tehran University of Medical Sciences, Tehran 14455-364, Iran

Received 15 September 2011; Accepted 8 October 2011

Academic Editors: A. D. Rapidis and J. F. Xian

Copyright © 2012 Seyede Faranak Emami 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.

Abstract

Vestibular hearing in human is evoked as a result of the auditory sensitivity of the saccule to low-frequency high-intensity tone. The objective was to investigate the relationship between vestibular hearing using cervical vestibular-evoked myogenic potentials (cVEMPs) and speech processing via word recognition scores in white noise (WRSs in wn). Intervention comprised of audiologic examinations, cVEMPs, and WRS in wn. All healthy subjects had detectable cVEMPs (safe vestibular hearing). WRSs in wn were obtained for them (66.9 ± 9.3% in the right ears and 67.5 ± 11.8% in the left ears). Dizzy patients in the affected ears, had the cVEMPs abnormalities (insecure vestibular hearing) and decreased the WRS in wn (51.4 ± 3.8% in the right ears and 52.2 ± 3.5% in the left ears). The comparison of the cVEMPs between the subjects revealed significant differences ( 𝑃 < 0.05). Therefore, the vestibular hearing can improve the speech processing in the competing noisy conditions.