Clinical investigation on spontaneous otoacoustic emission (SOAE) in 447 ears

Kuroda, Takeo

doi:10.1016/j.anl.2006.09.023

Cited by 27 publications

(32 citation statements)

References 34 publications

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“…Comparing hearing sensitivity in ears with low-and high-frequency SOAEs Overall hearing sensitivity has been shown to be better in ears with SOAEs than those without (Moulin et al, 1991;McFadden and Mishra, 1993;Kuroda, 2007). Such a comparison cannot be readily made from our data as hearing thresholds around SOAE frequencies were matched within subject pairs.…”

Section: A Soae Generationmentioning

confidence: 85%

“…Although there are a number of reports linking highfrequency SOAEs with hearing impairment or cochlear damage, the vast majority of SOAEs seem to be by-products of normal cochlear function. In fact, most SOAEs are recorded from normal-hearing human ears, with reported prevalence ranging from 30% to 80% (Strickland et al, 1985;Lonsbury-Martin et al, 1991;Probst et al, 1991;Penner et al, 1993;Talmadge et al, 1993;Kuroda, 2007). The majority of these SOAEs are found below 4 kHz.…”

Section: Introductionmentioning

confidence: 99%

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Spontaneous otoacoustic emissions, threshold microstructure, and psychophysical tuning over a wide frequency range in humans

Baiduc

Lee

Dhar

2014

The Journal of the Acoustical Society of America

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Hearing thresholds have been shown to exhibit periodic minima and maxima, a pattern known as threshold microstructure. Microstructure has previously been linked to spontaneous otoacoustic emissions (SOAEs) and normal cochlear function. However, SOAEs at high frequencies (>4 kHz) have been associated with hearing loss or cochlear pathology in some reports. Microstructure would not be expected near these high-frequency SOAEs. Psychophysical tuning curves (PTCs), the expression of frequency selectivity, may also be altered by SOAEs. Prior comparisons of tuning between ears with and without SOAEs demonstrated sharper tuning in ears with emissions. Here, threshold microstructure and PTCs were compared at SOAE frequencies ranging between 1.2 and 13.9 kHz using subjects without SOAEs as controls. Results indicate: (1) Threshold microstructure is observable in the vicinity of SOAEs of all frequencies; (2) PTCs are influenced by SOAEs, resulting in shifted tuning curve tips, multiple tips, or inversion. High frequency SOAEs show a greater effect on PTC morphology. The influence of most SOAEs at high frequencies on threshold microstructure and PTCs is consistent with those at lower frequencies, suggesting that high-frequency SOAEs reflect the same cochlear processes that lead to SOAEs at lower frequencies.

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Section: A Soae Generationmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Spontaneous otoacoustic emissions, threshold microstructure, and psychophysical tuning over a wide frequency range in humans

Baiduc

Lee

Dhar

2014

The Journal of the Acoustical Society of America

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“…Este dado corrobora os achados da literatura [6][7][8][9] , uma vez que apenas um estudo descreveu comportamento semelhante das emissões otoacústicas evocadas transientes independente da orelha 11 . A assimetria das emissões otoacústicas evocadas transientes obtidas entre as orelhas tem sido justi cada pela atuação do sistema eferente auditivo sobre a amplitude das emissões otoacústicas 10,26 , assim como, a prevalência da presença das emissões otoacústicas espontâneas na orelha direita 7 . Ressalta-se, que não houve diferença da amplitude absoluta entre orelhas 12,27 , apenas, para a banda de frequência de 1kHz, tanto para o grupo a termo quanto pré-termo, porém, não há nenhuma justi cativa aparente para este achado.…”

Section: Banda De Frequênciaunclassified

Emissões otoacústicas evocadas transientes em recém-nascidos a termo e pré-termo

et al. 2010

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RESUMOObjetivo: analisar a amplitude absoluta e nível de Response das emissões otoacústicas evocadas transientes em recém-nascidos pré-termo e a termo. Métodos: participaram deste estudo 50 recém-nascidos a termo e 50 pré-termo, os quais foram submetidos à triagem auditiva neonatal por meio da pesquisa das emissões otoacústicas evocadas transientes, realizada entre 24 horas e 11 semanas de vida. Todos os recém-nascidos apresentaram presença de emissões otoacústicas evocadas por clique no teste da triagem auditiva neonatal. Resultados: não houve diferença estatisticamente signicante da amplitude e nível de Response entre os recém-nascidos a termo e pré-termos. Não houve correlação signi cante entre os fatores prematuridade, idade do recém-nascido no teste e tempo de estimulação auditiva com os resultados obtidos. Conclusão: as emissões otoacústicas evocadas transientes registradas em recém-nascidos a termos e pré-termos apresentam semelhante amplitude absoluta e nível de Response. . Para o registro con ável das EOE-t são necessárias condições favoráveis da orelha externa e média 1,2 assim como, um ambiente tratado acusticamente ou silencioso. DESCRITORES:Neste contexto, questiona-se também, se a prematuridade deveria ser uma variável a ser considerada na análise do resultado obtido na TAN com EOE-t, uma vez que sua realização é limitada em recém-nascidos (RN) com menos de 35 semanas de gestação, principalmente entre 28 e 30 semanas, devido a dimensão do meato acústico externo e eventual imaturidade do desenvolvimento da cóclea 3 . Estudos demonstraram que RN prematuros apresentam presença de EOE-t a partir da 27 a semana de gestação. Contudo, constataram que os RN a termo apresentaram maior índice de resultado passa na triagem auditiva neonatal, e ressaltaram que a pressão da orelha média, obstrução do meato acústico externo, e o próprio desenvolvimento da orelha externa e média podem ter in uenciado nos resultados 3,4 . Os autores ressaltaram que os INTRODUÇÃOA pesquisa das emissões otoacústicas evocadas transientes (EOE-t) é um procedimento

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“…Moulin et al [1993b] found a prevalence of SOAE of 41% in a group of 135 adults without a hearing disorder and Probst [1990] described a prevalence of 43%. For children, a prevalence of 40% was mentioned by Strickland [1985] and of 52% by Kuroda [2007]. Burns et al [1992] described a prevalence of 64% in neonates.…”

Section: Prevalence Of Soaementioning

confidence: 99%

“…Interrelations between evoked OAE and spontaneous OAE (SOAE), without any stimulation, have been shown [Moulin et al, 1993b;Khalfa et al, 1997]. Kuroda [2007] measured different OAEs in numerous ears and found out that in some cases SOAE appear even if no other types of OAE could be detected. He suggested the combination of SOAE and for example transient evoked OAE (TEOAE) for clinical assessment.…”

mentioning

confidence: 99%

Spontaneous Otoacoustic Emission Enhancement in Children with Reduced Speech-in-Noise Intelligibility

Elgeti¹,

Zehnhoff-Dinnesen²,

Matulat³

et al. 2008

Audiol Neurotol

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Reduced speech-in-noise intelligibility is one of the main difficulties experienced by children with auditory processing disorder (APD). Previous studies have established a relationship between the function of the medial olivocochlear system (MOCS) and reduced inhibition of otoacoustic emissions (OAE) in children with APD. This study measured spontaneous OAE (SOAE) in 27 children with reduced speech-in-noise intelligibility, and those of a control group matched by gender and age. A significantly higher prevalence of SOAE was found: 85% of the study group presented SOAE, 44% in the control group. An abnormally functioning MOCS with reduced inhibition could lead to an increase in SOAE. Identifying a higher prevalence and number of SOAE may be a helpful objective mean to include in an APD diagnosis test battery.

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Clinical investigation on spontaneous otoacoustic emission (SOAE) in 447 ears

Cited by 27 publications

References 34 publications

Spontaneous otoacoustic emissions, threshold microstructure, and psychophysical tuning over a wide frequency range in humans

Spontaneous otoacoustic emissions, threshold microstructure, and psychophysical tuning over a wide frequency range in humans

Emissões otoacústicas evocadas transientes em recém-nascidos a termo e pré-termo

Spontaneous Otoacoustic Emission Enhancement in Children with Reduced Speech-in-Noise Intelligibility

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