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Contralateral suppression of distortion product otoacoustic emissions and the middle-ear muscle reflex in human ears

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dc.contributor Wichita State University. Department of Communication Sciences and Disorders en_US
dc.contributor.author Sun, Xiao-Ming en_US
dc.date.accessioned 2012-02-29T18:34:37Z
dc.date.available 2012-02-29T18:34:37Z
dc.date.issued 2008-03 en_US
dc.identifier 18258398 en_US
dc.identifier 7900445 en_US
dc.identifier S0378-5955(07)00296-1 en_US
dc.identifier.citation Hearing research. 2008 Mar; 237(1-2): 66-75. en_US
dc.identifier.issn 0378-5955 en_US
dc.identifier.uri http://dx.doi.org/10.1016/j.heares.2007.12.004 en_US
dc.identifier.uri http://hdl.handle.net/10057/4686
dc.description Click on the DOI link below to access the article (may not be free). en_US
dc.description.abstract Distortion product otoacoustic emissions (DPOAEs) were measured in the absence and presence of contralateral noise at five levels--below, equal to, and above the middle-ear muscle (MEM) reflex threshold. The resultant changes in DPOAE level and phase were dependent on stimulus frequency and noise level. Both low-level noise, believed to elicit the medial olivocochlear (MOC) reflex, and high-level noise, thought to activate both MOC and MEM reflexes, significantly decreased the DPOAE level. However, the shift from sole MOC effect to mixed MOC and MEM effects was not as dramatic as we thought. While low-level noise resulted in a minimum DPOAE phase change, high-level noise caused a substantial phase lead for 1 and 2kHz. With increasing frequency, phase lag became more notable. The present study suggests the following: (1) DPOAE contralateral suppression by low-level sound most likely does not involve the effect of the MEM reflex and signal crossover; and (2) combined analysis of DPOAE level and phase changes warrants further investigations to overcome the difficulty in separating the effects of MOC efferents and MEM contraction. The results also imply that OAE measurement has the potential for being used to investigate the effect of the MEM reflex on sound transmission. en_US
dc.format.extent 66-75 en_US
dc.language.iso eng en_US
dc.publisher Elsevier BV en_US
dc.relation.ispartofseries Hearing Research en_US
dc.relation.ispartofseries Hear. Res. en_US
dc.source NLM en_US
dc.subject Research Support, Non-U.S. Gov't en_US
dc.subject.mesh Adult en_US
dc.subject.mesh Cochlea/physiology en_US
dc.subject.mesh Ear, Middle/physiology en_US
dc.subject.mesh Female en_US
dc.subject.mesh Functional Laterality/physiology en_US
dc.subject.mesh Hearing/physiology en_US
dc.subject.mesh Humans en_US
dc.subject.mesh Male en_US
dc.subject.mesh Olivary Nucleus/physiology en_US
dc.subject.mesh Otoacoustic Emissions, Spontaneous/physiology en_US
dc.subject.mesh Perceptual Distortion/physiology en_US
dc.subject.mesh Reflex, Acoustic/physiology en_US
dc.title Contralateral suppression of distortion product otoacoustic emissions and the middle-ear muscle reflex in human ears en_US
dc.type Article en_US
dc.coverage.spacial Netherlands en_US
dc.description.version peer reviewed en_US
dc.rights.holder Copyright © 2008 Elsevier en_US

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