Tinnitus is associated with reduced sound level tolerance in adolescents with normal audiograms and otoacoustic emissions

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art_SANCHEZ_Tinnitus_is_associated_with_reduced_sound_level_tolerance_2016.PDF (621.49 KB)
Citações na Scopus
26
Tipo de produção
article
Data de publicação
2016
DOI
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
NATURE PUBLISHING GROUP
Autores
MORAES, Fernanda
CASSEB, Juliana
COTA, Jaci
FREIRE, Katya
ROBERTS, Larry E.
Citação
SCIENTIFIC REPORTS, v.6, article ID 27109, 8p, 2016
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
Recent neuroscience research suggests that tinnitus may reflect synaptic loss in the cochlea that does not express in the audiogram but leads to neural changes in auditory pathways that reduce sound level tolerance (SLT). Adolescents (N = 170) completed a questionnaire addressing their prior experience with tinnitus, potentially risky listening habits, and sensitivity to ordinary sounds, followed by psychoacoustic measurements in a sound booth. Among all adolescents 54.7% reported by questionnaire that they had previously experienced tinnitus, while 28.8% heard tinnitus in the booth. Psychoacoustic properties of tinnitus measured in the sound booth corresponded with those of chronic adult tinnitus sufferers. Neither hearing thresholds (<= 15 dB HL to 16 kHz) nor otoacoustic emissions discriminated between adolescents reporting or not reporting tinnitus in the sound booth, but loudness discomfort levels (a psychoacoustic measure of SLT) did so, averaging 11.3 dB lower in adolescents experiencing tinnitus in the acoustic chamber. Although risky listening habits were near universal, the teenagers experiencing tinnitus and reduced SLT tended to be more protective of their hearing. Tinnitus and reduced SLT could be early indications of a vulnerability to hidden synaptic injury that is prevalent among adolescents and expressed following exposure to high level environmental sounds.
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URI
https://observatorio.fm.usp.br/handle/OPI/14289
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Coleções
Artigos e Materiais de Revistas Científicas - FM/MOF
Artigos e Materiais de Revistas Científicas - LIM/32