Psychoacoustic analyses of cochlear mechanisms in tinnitus patients with normal auditory thresholds

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dc.contributorSistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSP
dc.contributor.authorBUZO, Byanka Cagnacci
dc.contributor.authorCARVALLO, Renata Mota Mamede
dc.date.accessioned2014-04-28T22:01:12Z
dc.date.available2014-04-28T22:01:12Z
dc.date.issued2014
dc.description.abstractObjective: Tinnitus is often related to auditory dysfunction. We hypothesised that, among individuals with normal auditory thresholds, the mechanism of frequency selectivity might differ between subjects with and without tinnitus. Our objective was to identify any differences between normal-hearing individuals with tinnitus and those without in terms of psychophysical tuning curves (PTCs) and threshold-equalising noise (TEN) test results. Design: We determined PTCs and performed the TEN test. Study sample: We evaluated 57 individuals, 16 with bilateral tinnitus (tinnitus-group) and 41 without tinnitus (control-group). Results: We found significant differences between tinnitus and control groups regarding the following: 2 kHz PTCs obtained in noise at 6 and 8 kHz; 4 kHz PTCs obtained in noise at 2 and 8 kHz; and 6 and 8 kHz PTCs obtained in noise at 2 and 3 kHz. The TEN test revealed differences between groups in terms of auditory thresholds, which were significantly higher in the tinnitus group. In addition, none of the individuals in the tinnitus group were found to have dead regions in the cochlea. Conclusions: Despite having normal auditory thresholds, individuals with tinnitus have auditory patterns that differ significantly from those seen in individuals without tinnitus, such differences being suggestive of cochlear impairment.
dc.description.indexMEDLINE
dc.description.sponsorshipFAPESP - Sao Paulo Research Foundation [05/02474-3]
dc.identifier.citationINTERNATIONAL JOURNAL OF AUDIOLOGY, v.53, n.1, p.40-47, 2014
dc.identifier.doi10.3109/14992027.2013.840931
dc.identifier.eissn1708-8186
dc.identifier.issn1499-2027
dc.identifier.urihttps://observatorio.fm.usp.br/handle/OPI/5376
dc.language.isoeng
dc.publisherINFORMA HEALTHCARE
dc.relation.ispartofInternational Journal of Audiology
dc.rightsrestrictedAccess
dc.rights.holderCopyright INFORMA HEALTHCARE
dc.subjectAudiometry
dc.subjectauditory hair cells
dc.subjecthearing
dc.subjecthearing tests
dc.subjecttinnitus
dc.subject.othernoise-induced tinnitus
dc.subject.otherhearing-loss
dc.subject.otherspeech-perception
dc.subject.othernormal audiogram
dc.subject.othertuning curves
dc.subject.othersystem
dc.subject.othermasking
dc.subject.wosAudiology & Speech-Language Pathology
dc.subject.wosOtorhinolaryngology
dc.titlePsychoacoustic analyses of cochlear mechanisms in tinnitus patients with normal auditory thresholds
dc.typearticle
dc.type.categoryoriginal article
dc.type.versionpublishedVersion
dspace.entity.typePublication
hcfmusp.citation.scopus6
hcfmusp.contributor.author-fmusphcBYANKA CAGNACCI BUZO
hcfmusp.contributor.author-fmusphcRENATA MOTA MAMEDE CARVALLO
hcfmusp.description.beginpage40
hcfmusp.description.endpage47
hcfmusp.description.issue1
hcfmusp.description.volume53
hcfmusp.origemWOS
hcfmusp.origem.pubmed24168288
hcfmusp.origem.scopus2-s2.0-84891378634
hcfmusp.origem.wosWOS:000329066200009
hcfmusp.publisher.cityLONDON
hcfmusp.publisher.countryENGLAND
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hcfmusp.remissive.sponsorshipFAPESP
hcfmusp.scopus.lastupdate2024-05-10
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