Lateralidade da atividade do sistema olivococlear medial eferente: estudo preliminar

Silva, Tatiana Rocha; Dias, Fernanda Abalen Martins

doi:10.1590/1982-021620151768615

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…The high occurrence of central disorder in newborns with PIVH confirms the need to assess the neurological protocol, associated with TEOAE, for early diagnosis in this population (15) .…”

Section: Discussionmentioning

confidence: 82%

Peri-intraventricular hemorrhage: Study of the inhibitory effect of auditory efferent pathway

Maruta

Azevedo

2020

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Purpose: to determine the functioning of the efferent auditory system in premature newborns with intraventricular hemorrhage. Method: the sample consisted of 44 newborns, divided into two groups. The study group was composed of 22 premature newborns with intraventricular hemorrhage/and the control group was composed of 22 newborns without intraventricular hemorrhage, matched to the study group for gestational age, correct gestational age and sex. The groups were submitted to the evaluation of the inhibitory effect of auditory efferent in otoacoustic emissions (equipment ILOv6-Otodynamics Ltda®) and auditory evoked potential with and without contralateral noise (equipment SmartEP-Intelligent Hearing Systems®). Results: newborns with intraventricular hemorrhage exhibited a higher occurrence of central hearing alteration as well as a lesser occurrence of the inhibitory effect of auditory efferent in otoacoustic emissions and auditory evoked potential compared to the newborns without this condition. An association was found between central hearing alteration and a lower occurrence of inhibitory effect. Agreement was found between the inhibitory effect test on otoacoustic emissions and latency of the auditory evoked potential. Conclusion: premature newborns with intraventricular hemorrhage have a greater occurrence of functional abnormality of the afferent auditory system, which can be effectively identified through an evaluation of the inhibitory effect of auditory efferent in otoacoustic emissions evoked by a transient stimulus and latency parameter in the brainstem auditory evoked potential.

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“…The high occurrence of central disorder in newborns with PIVH confirms the need to assess the neurological protocol, associated with TEOAE, for early diagnosis in this population (15) .…”

Section: Discussionmentioning

confidence: 82%

Peri-intraventricular hemorrhage: Study of the inhibitory effect of auditory efferent pathway

Maruta

Azevedo

2020

CoDAS

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Electroacoustic and electrophysiological auditory assessment in aphasic individuals

et al. 2020

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ABSTRACT Purpose: to verify the functioning of the outer hair cells and the medial efferent olivocochlear system, and the integrity of the auditory pathways in the brainstem up to the auditory cortex, in aphasic individuals. Methods: the sample comprised 20 individuals - 10 without aphasia and 10 with it, aged from 21 to 58 years. The procedures used were the research of the otoacoustic emissions by a transient stimulus with and without noise, and the cognitive potential (tone-burst and speech stimuli). The findings were analyzed based on descriptive statistics. Results: the suppression effect was more present in individuals without aphasia when compared with the aphasic ones. In the cognitive potential, the mean latency values of P3 was within normality standards, with a higher latency in the individuals presented with aphasia for the tone-burst stimulus in both ears. A statistically significant difference of the P3-N2 amplitude was observed for the tone-burst stimulus, comparing the ears in both groups, and for speech stimulus only to the left ear in both groups. Conclusions: aphasic individuals did not present significant differences regarding suppression of the otoacoustic emissions. As for the cognitive potential, the aphasic individuals presented higher latency values when compared to those with no aphasia.

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Efeito inibitório da via auditiva eferente na síndrome de Turner

Bazilio

Santos

Frota

et al. 2022

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RESUMO Objetivo investigar o efeito inibitório da via auditiva eferente na síndrome de Turner e relacionar com o perfil citogenético. Método estudo descritivo transversal com grupo de comparação. Amostra: Grupo estudo formado por 40 pacientes com síndrome de Turner (17,6 anos); e Grupo controle constituído por 54 indivíduos (18,9 anos), do sexo feminino sem síndrome. Os indivíduos selecionados foram submetidos à pesquisa do efeito inibitório da via auditiva eferente. Resultados A média do Efeito inibitório da via auditiva eferente no grupo estudo na orelha direita foi 0,4 dB e no grupo comparação foi de 1,9 dB, entretanto na orelha esquerda a média do efeito inibitório da via auditiva eferente foi 1,4 dB no grupo estudo e 0,8 dB no grupo comparação. O efeito inibitório da via auditiva eferente foi presente em 14 indivíduos com monossomia e em 15 com outras alterações citogenéticas. Conclusão No grupo estudo o valor do efeito inibitório da via auditiva eferente foi significantemente maior na orelha esquerda e significativamente menor que o grupo controle na direita. Não houve diferença significativa no efeito inibitório da via auditiva eferente entre os tipos de cariótipo.

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Lateralidade da atividade do sistema olivococlear medial eferente: estudo preliminar

Cited by 3 publications

References 10 publications

Peri-intraventricular hemorrhage: Study of the inhibitory effect of auditory efferent pathway

Peri-intraventricular hemorrhage: Study of the inhibitory effect of auditory efferent pathway

Electroacoustic and electrophysiological auditory assessment in aphasic individuals

Efeito inibitório da via auditiva eferente na síndrome de Turner

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