Electroacoustic evaluation of the olivocochlear efferent pathway in subjects with tinnitus complaint/Avaliacao eletroacustica da via eferente olivococlear em individuos com queixa de zumbido

Purpose: to investigate the suppressive effect of transient-evoked otoacoustic emissions in subjects with tinnitus complaint and normal audiometry and to analyze the relation to age, gender, laterality of tinnitus and its degree of discomfort. Methods: we assessed 60 subjects, 14 males and 46 female...

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Veröffentlicht in:Revista CEFAC 2016-09, Vol.18 (5), p.1069
Hauptverfasser: Filha, Valdete Alves Valentins dos Santos, Branco-Barreiro, Fatima Cristina Alves, Gomes, Ariane Macedo, dos Santos, Teresa Maria Momensohn
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container_issue 5
container_start_page 1069
container_title Revista CEFAC
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creator Filha, Valdete Alves Valentins dos Santos
Branco-Barreiro, Fatima Cristina Alves
Gomes, Ariane Macedo
dos Santos, Teresa Maria Momensohn
description Purpose: to investigate the suppressive effect of transient-evoked otoacoustic emissions in subjects with tinnitus complaint and normal audiometry and to analyze the relation to age, gender, laterality of tinnitus and its degree of discomfort. Methods: we assessed 60 subjects, 14 males and 46 females, aged between 20 and 59 years, 30 with tinnitus (experimental group) and 30 without tinnitus complaint (control group). The suppression of transient-evoked otoacoustic emissions was investigated with contralateral white noise at 50 dBHL at the frequency bands of 700, 1000, 1400, 2000, 2800 and 4000Hz. Results: the mean value for the suppression of transient-evoked otoacoustic emissions in the experimental group ranged from 2.14 to 4.38. In the control group, the mean value for suppression of transient-evoked otoacoustic emissions ranged from 2.27 to 4.88. Conclusion: suppression values of otoacoustic emissions were similar in subjects with and without tinnitus, although the results of the tinnitus group were lower, suggesting worse performance of the Superior Olivary Complex. Keywords: Tinnitus; Hearing; Hearing Tests; Hair Cells, Auditory, Outer; Signal-To-Noise Ratio Objetivo: investigar o efeito supressor das emissoes otoacusticas por estimulos transientes em individuos com queixa zumbido e audiometria normal e analisar sua relacao com as variaveis idade, sexo, lateralidade do zumbido e grau de incomodo. Metodos: foram avaliados 60 sujeitos, 14 do genero masculino e 46 do genero feminino, entre 20 e 59 anos de idade, sendo 30 com queixa de zumbido (grupo experimental) e 30 sem zumbido (grupo controle). Foi realizada a pesquisa da supressao das emissoes otoacusticas por estimulos transientes, para ruido branco de 50 dBNA, na condicao contralateral nas bandas de frequencia de 700, 1000, 1400, 2000, 2800 and 4000Hz. Resultado: no grupo experimental, a supressao das emissoes otoacusticas transientes media variou de 2,14 a 4,38. No grupo controle o valor medio da supressao das emissoes otoacusticas transientes variou de 2,27 a 4,88. Conclusao: os valores de supressao das emissoes otoacusticas foram semelhantes nos individuos com e sem zumbido, embora o grupo com o sintoma tenha tido resultados menores, sugerindo pior desempenho do Complexo Olivar Superior. Descritores: Zumbido; Audicao; Testes Auditivos; Celulas Ciliadas Auditivas Externas; Razao Sinal-Ruido
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Methods: we assessed 60 subjects, 14 males and 46 females, aged between 20 and 59 years, 30 with tinnitus (experimental group) and 30 without tinnitus complaint (control group). The suppression of transient-evoked otoacoustic emissions was investigated with contralateral white noise at 50 dBHL at the frequency bands of 700, 1000, 1400, 2000, 2800 and 4000Hz. Results: the mean value for the suppression of transient-evoked otoacoustic emissions in the experimental group ranged from 2.14 to 4.38. In the control group, the mean value for suppression of transient-evoked otoacoustic emissions ranged from 2.27 to 4.88. Conclusion: suppression values of otoacoustic emissions were similar in subjects with and without tinnitus, although the results of the tinnitus group were lower, suggesting worse performance of the Superior Olivary Complex. Keywords: Tinnitus; Hearing; Hearing Tests; Hair Cells, Auditory, Outer; Signal-To-Noise Ratio Objetivo: investigar o efeito supressor das emissoes otoacusticas por estimulos transientes em individuos com queixa zumbido e audiometria normal e analisar sua relacao com as variaveis idade, sexo, lateralidade do zumbido e grau de incomodo. Metodos: foram avaliados 60 sujeitos, 14 do genero masculino e 46 do genero feminino, entre 20 e 59 anos de idade, sendo 30 com queixa de zumbido (grupo experimental) e 30 sem zumbido (grupo controle). Foi realizada a pesquisa da supressao das emissoes otoacusticas por estimulos transientes, para ruido branco de 50 dBNA, na condicao contralateral nas bandas de frequencia de 700, 1000, 1400, 2000, 2800 and 4000Hz. Resultado: no grupo experimental, a supressao das emissoes otoacusticas transientes media variou de 2,14 a 4,38. No grupo controle o valor medio da supressao das emissoes otoacusticas transientes variou de 2,27 a 4,88. Conclusao: os valores de supressao das emissoes otoacusticas foram semelhantes nos individuos com e sem zumbido, embora o grupo com o sintoma tenha tido resultados menores, sugerindo pior desempenho do Complexo Olivar Superior. 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Methods: we assessed 60 subjects, 14 males and 46 females, aged between 20 and 59 years, 30 with tinnitus (experimental group) and 30 without tinnitus complaint (control group). The suppression of transient-evoked otoacoustic emissions was investigated with contralateral white noise at 50 dBHL at the frequency bands of 700, 1000, 1400, 2000, 2800 and 4000Hz. Results: the mean value for the suppression of transient-evoked otoacoustic emissions in the experimental group ranged from 2.14 to 4.38. In the control group, the mean value for suppression of transient-evoked otoacoustic emissions ranged from 2.27 to 4.88. Conclusion: suppression values of otoacoustic emissions were similar in subjects with and without tinnitus, although the results of the tinnitus group were lower, suggesting worse performance of the Superior Olivary Complex. Keywords: Tinnitus; Hearing; Hearing Tests; Hair Cells, Auditory, Outer; Signal-To-Noise Ratio Objetivo: investigar o efeito supressor das emissoes otoacusticas por estimulos transientes em individuos com queixa zumbido e audiometria normal e analisar sua relacao com as variaveis idade, sexo, lateralidade do zumbido e grau de incomodo. Metodos: foram avaliados 60 sujeitos, 14 do genero masculino e 46 do genero feminino, entre 20 e 59 anos de idade, sendo 30 com queixa de zumbido (grupo experimental) e 30 sem zumbido (grupo controle). Foi realizada a pesquisa da supressao das emissoes otoacusticas por estimulos transientes, para ruido branco de 50 dBNA, na condicao contralateral nas bandas de frequencia de 700, 1000, 1400, 2000, 2800 and 4000Hz. Resultado: no grupo experimental, a supressao das emissoes otoacusticas transientes media variou de 2,14 a 4,38. No grupo controle o valor medio da supressao das emissoes otoacusticas transientes variou de 2,27 a 4,88. Conclusao: os valores de supressao das emissoes otoacusticas foram semelhantes nos individuos com e sem zumbido, embora o grupo com o sintoma tenha tido resultados menores, sugerindo pior desempenho do Complexo Olivar Superior. 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Methods: we assessed 60 subjects, 14 males and 46 females, aged between 20 and 59 years, 30 with tinnitus (experimental group) and 30 without tinnitus complaint (control group). The suppression of transient-evoked otoacoustic emissions was investigated with contralateral white noise at 50 dBHL at the frequency bands of 700, 1000, 1400, 2000, 2800 and 4000Hz. Results: the mean value for the suppression of transient-evoked otoacoustic emissions in the experimental group ranged from 2.14 to 4.38. In the control group, the mean value for suppression of transient-evoked otoacoustic emissions ranged from 2.27 to 4.88. Conclusion: suppression values of otoacoustic emissions were similar in subjects with and without tinnitus, although the results of the tinnitus group were lower, suggesting worse performance of the Superior Olivary Complex. Keywords: Tinnitus; Hearing; Hearing Tests; Hair Cells, Auditory, Outer; Signal-To-Noise Ratio Objetivo: investigar o efeito supressor das emissoes otoacusticas por estimulos transientes em individuos com queixa zumbido e audiometria normal e analisar sua relacao com as variaveis idade, sexo, lateralidade do zumbido e grau de incomodo. Metodos: foram avaliados 60 sujeitos, 14 do genero masculino e 46 do genero feminino, entre 20 e 59 anos de idade, sendo 30 com queixa de zumbido (grupo experimental) e 30 sem zumbido (grupo controle). Foi realizada a pesquisa da supressao das emissoes otoacusticas por estimulos transientes, para ruido branco de 50 dBNA, na condicao contralateral nas bandas de frequencia de 700, 1000, 1400, 2000, 2800 and 4000Hz. Resultado: no grupo experimental, a supressao das emissoes otoacusticas transientes media variou de 2,14 a 4,38. No grupo controle o valor medio da supressao das emissoes otoacusticas transientes variou de 2,27 a 4,88. Conclusao: os valores de supressao das emissoes otoacusticas foram semelhantes nos individuos com e sem zumbido, embora o grupo com o sintoma tenha tido resultados menores, sugerindo pior desempenho do Complexo Olivar Superior. Descritores: Zumbido; Audicao; Testes Auditivos; Celulas Ciliadas Auditivas Externas; Razao Sinal-Ruido</abstract><pub>CEFAC - Associacao Institucional em Saude e Educacao</pub><doi>10.1590/1982-0216201618524415</doi></addata></record>
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title Electroacoustic evaluation of the olivocochlear efferent pathway in subjects with tinnitus complaint/Avaliacao eletroacustica da via eferente olivococlear em individuos com queixa de zumbido
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