Influência da idade na atividade do sistema eferente nas propriedades mecânicas da cóclea de ouvintes normais
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/S1808-8694(15)30648-0 http://hdl.handle.net/11449/231208 |
Resumo: | The medial olivocochlear tract has efferent control over the outer hair cells, regulating the slow contractions and damping the fast ones. Using ipsilateral, contralateral or bilateral otoacoustic emissions amplitude studies, it is possible to estimate the conditions of this tract, since the effect resulting from the reduction/suppression of these emissions indicate the tract's functioning. Aging implies an activity reduction in the central auditory system, because of the degeneration of the structures involved in hearing skills. Aim: our goal was to investigate the effects of age on the activities of this tract on the cochlea, through the analysis of the emissions' amplitude with contralateral acoustic stimulation. Materials and methods: Our series was made up of 75 individuals grouped according to age. The methodology was conventional, with a linear click and a white noise. Case study: the analysis considered the response from both ears and the comparison between the groups. Results: the results show a statistically significant difference between the emissions' response with and without contralateral acoustic stimulation in the individuals between 20 and 39 years of age. The emissions reduction/suppression effect reduced with age (fourth decade). Conclusion: aging impairs the tract effectiveness. © Revista Brasileira de Otorrinolaringologia. |
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Influência da idade na atividade do sistema eferente nas propriedades mecânicas da cóclea de ouvintes normaisAge impact on the eferent system actitivies in cochlear mechanical properties in normal hearing individualsAgingHearingOrgan of cortiThe medial olivocochlear tract has efferent control over the outer hair cells, regulating the slow contractions and damping the fast ones. Using ipsilateral, contralateral or bilateral otoacoustic emissions amplitude studies, it is possible to estimate the conditions of this tract, since the effect resulting from the reduction/suppression of these emissions indicate the tract's functioning. Aging implies an activity reduction in the central auditory system, because of the degeneration of the structures involved in hearing skills. Aim: our goal was to investigate the effects of age on the activities of this tract on the cochlea, through the analysis of the emissions' amplitude with contralateral acoustic stimulation. Materials and methods: Our series was made up of 75 individuals grouped according to age. The methodology was conventional, with a linear click and a white noise. Case study: the analysis considered the response from both ears and the comparison between the groups. Results: the results show a statistically significant difference between the emissions' response with and without contralateral acoustic stimulation in the individuals between 20 and 39 years of age. The emissions reduction/suppression effect reduced with age (fourth decade). Conclusion: aging impairs the tract effectiveness. © Revista Brasileira de Otorrinolaringologia.Fonoaudióloga Hospital de Reabilitação de Anomalias Craniofaciais Universidade de São PauloDepartamento de Engenharia Mecânica Universidade Estadual PaulistaDepartamento de Fonoaudiologia Universidade de São Paulo- Campus BauruCentro de Pesquisas Audiológicas Universidade de São PauloDepartamento de Engenharia Mecânica Universidade Estadual PaulistaUniversidade de São Paulo (USP)Universidade Estadual Paulista (UNESP)De Oliveira, Jerusa Roberta MassolaFernandes, João Candido [UNESP]Costa Filho, Orozimbo Alves2022-04-29T08:44:11Z2022-04-29T08:44:11Z2009-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article340-344http://dx.doi.org/10.1016/S1808-8694(15)30648-0Brazilian Journal of Otorhinolaryngology, v. 75, n. 3, p. 340-344, 2009.1808-86861808-8694http://hdl.handle.net/11449/23120810.1016/S1808-8694(15)30648-02-s2.0-69349088103Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengporBrazilian Journal of Otorhinolaryngologyinfo:eu-repo/semantics/openAccess2022-04-29T08:44:11Zoai:repositorio.unesp.br:11449/231208Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T08:44:11Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influência da idade na atividade do sistema eferente nas propriedades mecânicas da cóclea de ouvintes normais Age impact on the eferent system actitivies in cochlear mechanical properties in normal hearing individuals |
title |
Influência da idade na atividade do sistema eferente nas propriedades mecânicas da cóclea de ouvintes normais |
spellingShingle |
Influência da idade na atividade do sistema eferente nas propriedades mecânicas da cóclea de ouvintes normais De Oliveira, Jerusa Roberta Massola Aging Hearing Organ of corti |
title_short |
Influência da idade na atividade do sistema eferente nas propriedades mecânicas da cóclea de ouvintes normais |
title_full |
Influência da idade na atividade do sistema eferente nas propriedades mecânicas da cóclea de ouvintes normais |
title_fullStr |
Influência da idade na atividade do sistema eferente nas propriedades mecânicas da cóclea de ouvintes normais |
title_full_unstemmed |
Influência da idade na atividade do sistema eferente nas propriedades mecânicas da cóclea de ouvintes normais |
title_sort |
Influência da idade na atividade do sistema eferente nas propriedades mecânicas da cóclea de ouvintes normais |
author |
De Oliveira, Jerusa Roberta Massola |
author_facet |
De Oliveira, Jerusa Roberta Massola Fernandes, João Candido [UNESP] Costa Filho, Orozimbo Alves |
author_role |
author |
author2 |
Fernandes, João Candido [UNESP] Costa Filho, Orozimbo Alves |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
De Oliveira, Jerusa Roberta Massola Fernandes, João Candido [UNESP] Costa Filho, Orozimbo Alves |
dc.subject.por.fl_str_mv |
Aging Hearing Organ of corti |
topic |
Aging Hearing Organ of corti |
description |
The medial olivocochlear tract has efferent control over the outer hair cells, regulating the slow contractions and damping the fast ones. Using ipsilateral, contralateral or bilateral otoacoustic emissions amplitude studies, it is possible to estimate the conditions of this tract, since the effect resulting from the reduction/suppression of these emissions indicate the tract's functioning. Aging implies an activity reduction in the central auditory system, because of the degeneration of the structures involved in hearing skills. Aim: our goal was to investigate the effects of age on the activities of this tract on the cochlea, through the analysis of the emissions' amplitude with contralateral acoustic stimulation. Materials and methods: Our series was made up of 75 individuals grouped according to age. The methodology was conventional, with a linear click and a white noise. Case study: the analysis considered the response from both ears and the comparison between the groups. Results: the results show a statistically significant difference between the emissions' response with and without contralateral acoustic stimulation in the individuals between 20 and 39 years of age. The emissions reduction/suppression effect reduced with age (fourth decade). Conclusion: aging impairs the tract effectiveness. © Revista Brasileira de Otorrinolaringologia. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-01-01 2022-04-29T08:44:11Z 2022-04-29T08:44:11Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/S1808-8694(15)30648-0 Brazilian Journal of Otorhinolaryngology, v. 75, n. 3, p. 340-344, 2009. 1808-8686 1808-8694 http://hdl.handle.net/11449/231208 10.1016/S1808-8694(15)30648-0 2-s2.0-69349088103 |
url |
http://dx.doi.org/10.1016/S1808-8694(15)30648-0 http://hdl.handle.net/11449/231208 |
identifier_str_mv |
Brazilian Journal of Otorhinolaryngology, v. 75, n. 3, p. 340-344, 2009. 1808-8686 1808-8694 10.1016/S1808-8694(15)30648-0 2-s2.0-69349088103 |
dc.language.iso.fl_str_mv |
eng por |
language |
eng por |
dc.relation.none.fl_str_mv |
Brazilian Journal of Otorhinolaryngology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
340-344 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803047162639024128 |