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Audiology: Communication Research
Article . 2014 . Peer-reviewed
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Audiology: Communication Research
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Variabilidade do registro de latência e amplitude do potencial evocado auditivo de Longa Latência (P3) na condição teste e reteste

Authors: Reis, Ana Cláudia Mirândola Barbosa; Frizzo, Ana Cláudia Figueiredo; Lozano, Aline Cristine; Santos, Francine Raquel Dos; Anastasio, Adriana Ribeiro Tavares; Hyppolito, Miguel Angelo;

Variabilidade do registro de latência e amplitude do potencial evocado auditivo de Longa Latência (P3) na condição teste e reteste

Abstract

Objetivo Analisar a variabilidade da amplitude e latência do potencial cognitivo P3 em indivíduos normais, na condição teste e reteste, no período de sete dias. Métodos Foram avaliados 32 sujeitos, com idades entre 18 e 25 anos, 20 do gênero feminino e 12 do gênero masculino, sem queixas auditivas. Todos foram submetidos à avaliação audiológica e potencial evocado auditivo de longa latência. Resultados Os valores médios de latência e amplitude para o P3, obtidos neste estudo, foram de 314,78 ms e 312,40 ms para latência e 5,04 μV e 4,58 μV para amplitude, nas posições Cz e Fz, respectivamente. A média da diferença da latência da onda P3 na condição de reavaliação foi de 10,50 ms (Fz) e 15,25 ms (Cz) para o gênero feminino e de 6,00 ms (Fz) e 5,83 ms (Cz) para o gênero masculino. Conclusão Não houve diferença significativa quando comparadas latência e amplitude, no teste e reteste, com a fixação dos eletrodos em Cz e Fz. Não houve diferença para as latências e amplitude do P3 em todas as seguintes modalidades estudadas: gênero, fixação dos eletrodos (Cz e Fz) e condição teste e reteste. No entanto, para a latência do P3, houve diferença significativa para o gênero feminino, quando comparado em condição de teste e reteste.

Keywords

Percepção auditiva, Potenciais evocados, Auditory perception, Evoked potentials, Audição, Hearing, Otorhinolaryngology, RF1-547, Potencial evocado P300, P300, Event-related potencials, Auditory, Potenciais evocados auditivos

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
3
Average
Average
Average
Green
gold