2002
DOI: 10.1590/s0034-72992002000400004
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Investigação da estabilidade inter e intra-examinador na identificação do P300 auditivo: análise de erros

Abstract: Introdução: A possibilidade de correlacionar aspectos do comportamento auditivo (habilidades auditivas) a fenômenos fisiológicos observáveis (potencial cognitivo -P300) tem despertado o interesse dos profissionais interessados no estudo das disfunções auditivas. Porém, os métodos de análise do P300 e interpretação dos resultados ainda não estão padronizados e devem ser explorados e discutidos visando maior segurança para aplicação clínica e científica. Objetivo: Este estudo investigou a estabilidade na análise… Show more

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Cited by 32 publications
(26 citation statements)
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“…21 Next, latencies were marked on the highest peak -the point of maximum wave amplitude -and amplitudes were measured from the wavepeak to the baseline. 22 Values were within normal limits in the latency qualitative analysis for the age range we investigated (between 225 and 365 milliseconds for ages 17 to 30 years, and between 290 and 380 milliseconds for ages 30 to 50 years). 16 Results were considered as altered when latency values were increased or when responses were absent.…”
Section: Criteria For Results Analysissupporting
confidence: 56%
“…21 Next, latencies were marked on the highest peak -the point of maximum wave amplitude -and amplitudes were measured from the wavepeak to the baseline. 22 Values were within normal limits in the latency qualitative analysis for the age range we investigated (between 225 and 365 milliseconds for ages 17 to 30 years, and between 290 and 380 milliseconds for ages 30 to 50 years). 16 Results were considered as altered when latency values were increased or when responses were absent.…”
Section: Criteria For Results Analysissupporting
confidence: 56%
“…The identification of AEP waves followed the criteria established in the literature (22,23) , including visualization of four "negative-positive-negative-positive" wave sequence peaks, considering the replication of the waveforms in both ears. In LLAEP investigation, the absolute latencies and amplitudes of N1, P2, N2 and P300 waves were identified and analyzed.…”
Section: Methodsmentioning
confidence: 99%
“…Then, audiological evaluation was performed: tonal audiometry, frequencies from 250 Hz to 8000 Hz with air conduction headphones and from 500 Hz to 4000 Hz with bone conduction headphones, tympanometry, ipsilateral and contralateral reflex checks, at frequencies of 500 Hz to 4000 Hz. After confirming the normality of the peripheral auditory system through the procedures described above, indicating normal auditory acuity (thresholds less than or equal to 25 dBHL) (18) , type A tympanogram, indicating normal mobility of the tympano-ossicular system (19,20) and ipsilateral and contralateral reflexes present, research of the LLAEP was carried out.…”
Section: Methodsmentioning
confidence: 99%