The Effect of Contralateral Acoustic Stimulation on Spontaneous Otoacoustic Emissions
نویسندگان
چکیده
منابع مشابه
[Changes in human spontaneous otoacoustic emissions with contralateral acoustic stimulation].
According to current cochlear concepts, spontaneous otoacoustic emissions (SOAEs) are thought to be the product of outer hair cell (OHCs) movement. Furthermore, efferent neurofibers from the olivocochlear bundle primarily innervate OHCs. Thus, we designed this investigation to determine changes in SOAE under conditions of contralateral acoustic stimulation. Fouty-two normal ears of 34 subjects ...
متن کاملTime Course of the Suppression Effect on Transient Evoked Otoacoustic Emissions by Prolonged Contralateral Acoustic Stimulation
BACKGROUND AND OBJECTIVES Although the suppressive effect of the medial efferent acoustic reflex is well known, the time course of this effect over prolonged periods has yet to be fully evaluated. We assessed time-dependent change in the suppression of transient evoked otoacoustic emissions (TEOAEs) by the medial efferent acoustic reflex over a relatively long period. SUBJECTS AND METHODS We ...
متن کاملContralateral Acoustic Effect of Transient Evoked Otoacoustic Emissions in Neonates.
Contralateral acoustic stimulation (CAS) has the effect of reducing the amplitude of transient evoked otoacoustic emissions (TEOAE) of the opposite cochlea. This phenomenon is considered to be mediated via the efferent pathway, from the superior olivary complex through the medial olivocochlear system to the contralateral cochlea. The assessment of this suppressive effect provides an objective a...
متن کاملSpontaneous otoacoustic emissions in neonates and effect of contralateral white noise stimulation.
Neonates younger than the age of 12 weeks (10 full-term, 20 preterm) had an audiological assessment consisting of brainstem audiometry, tympanometry, transiently evoked otoacoustic emissions, and spontaneous otoacoustic emissions with contralateral white noise stimulation. Results from brainstem audiometry, tympanometry, and transiently evoked otoacoustic emissions suggested normal middle ear f...
متن کاملContralateral acoustic stimulation alters the magnitude and phase of distortion product otoacoustic emissions.
Activation of medial olivocochlear efferents through contralateral acoustic stimulation (CAS) has been shown to modulate distortion product otoacoustic emission (DPOAE) level in various ways (enhancement, reduction, or no change). The goal of this study was to investigate the effect of a range of CAS levels on DPOAE fine structure. The 2f(1)-f(2) DPOAE was recorded (f(2)/f(1)=1.22, L(1)=55 dB, ...
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ژورنال
عنوان ژورنال: Journal of the Association for Research in Otolaryngology
سال: 2009
ISSN: 1525-3961,1438-7573
DOI: 10.1007/s10162-009-0189-4