Otoacoustic Emission
Mostrando 13-24 de 29 artigos, teses e dissertações.
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13. Crescimento das emissões otoacústicas evocadas - produto de distorção: estudo em neonatos / Growth of distortion product otoacoustic emission: a study neonates
Introdução: A presença das emissões otoacústicas indica a atividade de mecanismos biológicos ativos dentro da cóclea, a função de Células Ciliadas Externas. Com a medida das emissões otoacústicas - produto de distorção (EOAPD) é possível verificar o crescimento da resposta de acordo com a intensidade do estímulo sonoro apresentado (curva de
Publicado em: 2010
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14. Audiological, electroacoustic and electrophysiological hearing assessment of adults with HIV/AIDS / Avaliação audiológica, eletroacústica e eletrofisiológica da audição em adultos com HIV/AIDS
INTRODUCTION: The Acquired Immunodeficiency Syndrome is caused by the human immunodeficiency virus, a specific retrovirus that affects the immunological system allowing the emergence of several opportunistic infections, and that may also affect the central auditory nervous system. AIM: To assess the peripheral and central auditory pathways of the auditory sy
Publicado em: 2009
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15. Ensaio clínico randomizado para avaliação do efeito otoprotetor do extrato de Ginkgo Biloba, por meio das emissões otoacústicas por produto de distorção, em pacientes sob tratamento com cisplatina
The ototoxicity is an alteration caused by drugs that compromises the auditory and vestibular functions. The cisplatin (CDDP) is a potent antineoplastic agent used for the treatment of cancer in both adults and children although it has several side effects. The cisplatin ototoxicity is a dose-limiting condition. Current opinion is that cisplatin ototoxicity
Publicado em: 2008
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16. Pop-rock musicians: effects of amplified music and assessment of satisfaction provided by the use hearing protectors / Músicos de pop-rock: efeitos da música amplificada e avaliação da satisfação no uso de protetores auditivos
Objetivo: Avaliar a audição e o uso de protetores auditivos em músicos de bandas de pop-rock. Justificativa: Estudos demonstram evidências dos músicos de pop-rock apresentarem risco para o desenvolvimento de perda auditiva e outros efeitos associados à exposição à música amplificada, bem como a necessidade de adotar medidas de proteção à audiç�
Publicado em: 2008
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17. Otoacoustic emission suppression and acoustic reflex sensitization in auditory processing disorders / Supressão das emissões otoacústicas e sensibilização do reflexo acústico no distúrbio de processamento auditivo
INTRODUCTION: Auditory processing depends on the auditory pathways integrity. Efferent auditory system may be assessed in humans by two non-invasive and objective methods: acoustic reflex and otoacoustic emissions suppression. OBJECTIVE: Analyze efferent auditory system activity by otoacoustic emissions suppression and acoustic reflex sensitization in human
Publicado em: 2007
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18. Zumbido e audição normal: estudo do reflexo acústico e da supressão das emissões otoacústicas
Introduction: The functioning of the auditory pathway of patients with tinnitus complaints and normal hearing can be directly related to a mal-functional in the auditory efferent pathway, regarding the level of the olivocochlear superior system, in which, the acoustic reflex threshold data and the otoacustic emissions with contralateral noise may represent a
Publicado em: 2007
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19. Distortion product otoacoustic emission in newborn exposed to ototoxic / "Emissões otoacústicas produto de distorção em recém-nascidos medicados com ototóxicos"
The amynoglicosides are frequently used in nurseries and may be toxic for the cochleo-vestibular hair cells, specially for the outer cells of the cochlear base. The distortion product otoacoustic emissions allow to evaluate specific portions of the cochlea even before the hearing sensation is altered, and are ideal for the early analysis of this auditory str
Publicado em: 2006
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20. Aspectos fisiologicos e fisicos da orelha como emissora de sons / Physics and physiological aspects of the ear as a sound emitter system
Ear is the sound receptor in our body. Sound is captured and driven through external ear, amplified and modulated in middle ear and transduced to electrical sign in internal ear. However, otoacoustic emissions and objective tinnitus are examples of an inverse process, where ear can be a sound emitter. Trying to understand some of theses events, in which soun
Publicado em: 2006
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21. Caracterização morfofuncional da ototoxicidade por cisplatina em ratos: avaliação do papel da apoptose e da otoproteção por amifostina / Morfofuncional characterization of the ototoxicidade for cisplatina in rats: evaluation of the paper of apoptose and the otoproteção for amifostina
Cisplatin (cis-diamminedicloroplatinum) is an antineoplastic drug frequently used in the treatment of a variety of cancers, specially the head-and-neck cancer. Ototoxicity, however, has been noted as a common side-effect of cisplatin, which may lead to significant interruptions in treatment, possibly impacting on local tumor control and patient survival. The
Publicado em: 2006
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22. Neonatal otoacoustic emission screening (OAE) for deafness: psychological costs.
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23. Revised estimates of human cochlear tuning from otoacoustic and behavioral measurements
We develop an objective, noninvasive method for determining the frequency selectivity of cochlear tuning at low and moderate sound levels. Applicable in humans at frequencies of 1 kHz and above, the method is based on the measurement of stimulus-frequency otoacoustic emissions and, unlike previous noninvasive physiological methods, does not depend on the fre
The National Academy of Sciences.
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24. Otoacoustic Emission Theories and Behavioral Estimates of Human Basilar Membrane Motion Are Mutually Consistent
When two pure tones (or primaries) of slightly different frequencies (f1 and f2) are presented to the ear, new frequency components are generated by nonlinear interaction of the primaries within the cochlea. These new components can be recorded in the ear canal as otoacoustic emissions (OAE). The level of the 2f1−f2 OAE component is known as the distortion
Springer-Verlag.