Study on suppression of otoacoustic emissions: lateral domain
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Data
2011-09-01
Autores
Massola de Oliveira, Jerusa Roberta
Fernandes, Candido Fernandes [UNESP]
Costa Filho, Orozimbo Alves
Título da Revista
ISSN da Revista
Título de Volume
Editor
Assoc Brasileira Otorrinolaringologia & Cirurgia Cervicofacial
Resumo
A pon stimulation by contralateral, ipsilateral or bilateral noise, the medial olivocochlear efferent tract changes the amplitude of otoacoustic emissions relative to the tested ear, reducing or removing it; this resulted in a reduction/suppression effect of otoacoustic emissions. Differences in patterns of elimination/reduction of otoacoustic emissions between ears have been documented worldwide; there are, however, no Brazilian studies investigating the effect of lateral dominance.Aims: To compare the effect of the presence of deletion/reduction of otoacoustic emissions and their amplitude relative to lateral dominance in normal hearing adults.Methods: A clinical and experimental study. The sample comprised 75 individuals. The methodology was conventional - linear click intensity of 60 dB SPL; white noise was contralateral stimulation at 60 dB SPL.Description of results: There were no statistically significant differences between right and left ear results, in terms of asymmetry of the degree of otoacoustic emissions and the presence of suppression/reduction.Conclusion: There is no lateral dominance in the degree of otoacoustic emissions in the presence of suppression/reduction in the study population.
Descrição
Palavras-chave
auditory pathways, otoacoustic emissions, spontaneous, suppression
Como citar
Brazilian Journal of Otorhinolaryngology. São Paulo: Assoc Brasileira Otorrinolaringologia & Cirurgia Cervicofacial, v. 77, n. 5, p. 547-554, 2011.