The effect of acoustic reflex on contralateral suppression of transient-evoked otoacoustic emissions
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1 Audiol. 2012;21(3):9-17. Research Article The effect of acoustic reflex on contralateral suppression of transient-evoked otoacoustic emissions Farzaneh Zamiri Abdollahi, Abdolreza Sheibanizadeh, Jalal Sameni Department of Audiology, School of Rehabilitation, Tehran University of Medical Sciences, Iran Received: 27 July 2011, accepted: 26 December 2011 Abstract Background and Aim: Contralateral suppression of transient evoked otoacoustic emissions (TEOAEs) test evaluates the efferent auditory system. In this test, acoustic reflex is an important confounding variable. In recent years, application of this test is growing especially in children suspect to central auditory processing disorder. Therefore, the magnitude of influence of this confounding variable on the suppression of TEOAEs should be made clear. The aim of this study was to investigate the impact of acoustic reflex on contralateral suppression of TEOAEs. Methods: This research was performed on 39 normal-hearing adults of both sexes and of years of age. Tests were used for the determination of interaural attenuation (IA), acoustic reflex, TEOAEs and contralateral suppression of TEOAEs. Results: TEOAEs amplitudes and their contralateral suppression were significantly higher in females and males respectively (p = 0.01). The amount of TEOAEs suppression before reflex activity ranged between 2000 to 3000 Hz. Activation of acoustic reflex significantly increased the magnitude of suppression in all frequency bands (p 0.01) and maximum suppression occurred in 500 to 1000 Hz. Conclusion: For achieving accuracy of clinical findings, clinicians should always use suppressant levels lower than the acoustic reflex threshold. It is recommended that different norms for males and females be used in contralateral suppression of TEOAEs. Keywords: Transient-evoked otoacoustic emissions, contralateral suppression of transient evoked otoacoustic emissions, acoustic reflex, interaural attenuation Corresponding author: Department of Audiology, School of Rehabilitation, Tehran University of Medical Sciences, Nezam Alley, Shahid Shahnazari St., Madar Square, Mirdamad Blvd., Tehran, , Iran. Tel: , takfarhad@gmail.com
2 . :.... 2/34 22/ :..(p=0/01) : (p=0/01) :... : (90/10/5 : 90/5/5 : ) 1989 OAE OAE.(4).(5) (2000) Buki (2008) Sun OAE Grant Rasmussen 1946 (Olivocochlear Bundle: OCB.(2 1) OCB) (Superior Olivary Complex: SOC).(3)..(1) (2006) Kim (Otoacoustic Emissions: OAEs) : takfarhad@gmail.com : :
3 11. 2/34 22/17.. Reister 2050 Amplaid 728. Madsen. Madsen OB ANSI A n /6 0/3. dapa -100 (Broadband Noise: BBN) Amplaid ) TEOAEs. OAE OB822 BBN (Interaural Attenuation: IA) 10 BBN IA. BBN. (1991) Martin.(10) IA IHS-Smart. TEOAE.. OAE OAE OAE.(7 6 3) OAE (2008) Sun OAE OAE (1995) Giraud.(3).(8) OAE OAE OCB.(9 8) OAE OAE.(3) (Transient Evoked Otoacoustic. Emissions: TEOAEs) ( 26 18)
4 12 TEOAEs 1 (SPL ) ( ) (db) 2/01 1/00 1/39 (0/28) -20 2/90 1/17 1/68 (0/34) -10 3/49 1/52 1/99 (0/42) 3/99 1/69 2/23 (0/43) +10 TEOAE TEOAE. 17 SPSS.. 0/05.. TEOAE 35/94) TEOAE. 30/28) (1/39.(p=0/00) (1/01. TEOAE TEOAE ) 1 (. TEOAE Intelligent Hearing System ) TrOAE (. TEOAE SPL TEOAE.(3) TEOAE. IHS-Smart TrOAE TEOAE ER-3A BBN :. +10 BBN TEOAE TEOAE. BBN TEOAE. TEOAE TEOAE IHS
5 13 TEOAEs 2 (db SPL) ( ) (db) 1/61 (0/18) 1/79 (0/21) * 2/13 (0/32) * 2/28 (0/30) 1/17 (0/21) 1/52 (0/40) * 1/85 (0/47) * 2/17 (0/54) p<0/001 * TEOAE.(12 11) OAEs TEOAE.( ) Collet (2008) Sun (1994) Prasher (1993) TEOAE. TEOAE ).(3) ( TEOAEs TEOAE TEOAEs TEOAE...(p=0/00) TEOAE.(p=0/00 ) TEOAE 2. TEOAE TEOAE. McFadden. (2006) McFadden (1993). OAE OAE OAE.
6 14 TEOAE 3 (db SPL) ( ) +10 5/41 (0/31) 5/46 (0/31) 1/30 (0/13) 4/91 (0/12) 3/92 (0/18) 4/46 (0/24) 3/47 (0/20) 2/74 (0/18) 2/23 (0/14) -10 0/31 (0/20) 0/89 (0/09) 1/10 (0/07) 1/84 (0/20) 4/91 (0/12) 5/44 (0/25) 4/13 (0/17) 3/10 (0/07) 2/57 (0/19) ( ) 0/5-0/75 0/ /5 1/ /5 2/ /5 3/ /5 (1993) McFadden.(7).(11).(13) 10 ( ) TEOAE.( ). ( ) (1996) Tavartkidadze. (2000) Morand (1992) Veuillet (BBN ) TEOAEs. TEOAEs (7) (1993) Berlin Hood TEOAE (1994) (2000) Morand.(7) TEOAE
7 ) DPOAE (. (2008) Sun. OAE. DPOAE.(3) TEOAE.. TEOAE. ( ).(5 1). OAE TEOAE. TEOAE TEOAE.. TEOAE TEOAE.(14) TEOAE ) ( : TEOAE TEOAE ( ( (2000) Buki. (Distortion Product OAE: DPOAE) DPOAE. DPOAE..(6) OAE (2008) Sun. DPOAE ) (
8 16.. REFERENCES 1. Glattke TJ, Robinette MS. Otoacoustic emissions. In: Roeser RJ, Valente M, Hosford-Dunn H, editors. Audiology diagnosis. 2 nd ed. New York: Thieme Medical publishers, Inc; p Simmons D. Cochlear efferent anatomy and physiology. In: Clark WW, Ohlemiller KK, editors. Anatomy and physiology of hearing for audiologists. 1 st ed. New York: Thomson; p Sun XM. Contralateral suppression of distortion product otoacoustic emissions and the middle-ear muscle reflex in humans ears. Hear Res. 2008;237(1-2): Kim SH, Frisina RD, Frisina DR. Effects of age on speech understanding in normal hearing listeners: Relationship between the auditory efferent system and speech intelligibility in noise. Speech Commun. 2006;48(7): Burguetti FA, Carvallo RM. Efferent auditory system: its effect on auditory processing. Braz J Otorhinolaryngol. 2008;74(5): Büki B, Wit HP, Avan P. Olivocochlear efferent vs middle-ear contributions to the alteration of otoacoustic emissions by contralateral noise. Brain Res. 2000;852(1): Morand N, Khalfa S, Ravazzani P, Tognola G, Grandori F, Durrant JD, et al. Frequency and temporal analysis of contralateral acoustic TEOAE. TEOAE. TEOAE TEOAE. TEOAE stimulation on evoked otoacoustic emissions in humans. Hear Res. 2000;145(1-2): Giraud AL, Collet L, Chéry-Croze S, Magnan J, Chays A. Evidence of a medial olivocochlear involvement in contralateral suppression of otoacoustic emissions in humans. Brain Res. 1995;705(1-2): Williams EA, Brookes GB, Prasher DK. Effects of contralateral acoustic stimulation on otoacoustic emissions following vestibular neurectomy. Scand Audiol. 1993;22(3): Blackwell KL, Oyler RF, Seyfried DN. A clinical comparison of Grason Stadler insert earphone and TDH-50P standard earphones. Ear Hear. 1991;12(5): McFadden D. A speculation about the parallel ear asymmetries and sex differences in hearing sensitivity and otoacoustic emissions. Hear Res. 1993;68(2): McFadden D, Pasanen EG, Raper J, Lange HS, Wallen K. Sex differences in otoacoustic emissions measured in rhesus monkeys (Macaca mulatta). Horm Behav. 2006;50(2): Gelfand SA. The acoustic reflex. In: Katz J, Medwetsky L, Burkard R, Hood L, editors. Handbook of clinical audiology. 6 th ed. Baltimore: Lippincott Williams & Wilkins; p Tavartkiladze GA, Frolenkov GI, Artamasov
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