The effect of noise on the amplitude and morphology of cortical auditory evoked potentials

Duarte, Danielle Samara Bandeira; Griz, Silvana Maria Sobral; Rocha, Mônyka Ferreira Borges; Britto, Diana Babini Lapa de Albuquerque; Menezes, Denise Costa; Advíncula, Karina Paes

doi:10.1016/j.bjorl.2021.11.006

Cited by 1 publication

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, auditory masking is also expected to affect the CAEP amplitude, decreasing it. 9 10 11 12 13 14 15 16 In the present study, although the difference was not significant, the N1 amplitude decreased ( Table 1 ) when white noise was presented contralaterally and simultaneously with CAEP with speech stimulus. The increase in P1 amplitudes and N1-P2 peak to peak, with no significant difference, in addition to P2, with a significant difference ( Table 2 ), can be explained as the central masking effect is considered smaller in relation to peripheral masking already analyzed in previous studies 22 .…”

Section: Discussioncontrasting

confidence: 69%

“…In auditory masking studies, masking can be presented simultaneously (simultaneous masking), before (premasking) and after (postmasking) the signal. 8 Noise (masker) is believed to affect CAEP responses with speech stimuli (signal) regardless of their position, increasing their latencies and decreasing their amplitudes 8 9 10 11 12 13 14 15 .…”

Section: Introductionmentioning

confidence: 99%

“…Most studies on this topic have focused on ipsilateral simultaneous masking 8 9 10 11 12 13 14 15 . In this sense, the present study aims to analyze the effect of simultaneous contralateral white noise masking on CAEP with speech stimuli.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Effect of Simultaneous Contralateral White Noise Masking on Cortical Auditory Evoked Potentials Elicited by Speech Stimuli

Felix,

Menezes,

Oliveira

et al. 2024

Int Arch Otorhinolaryngol

View full text Add to dashboard Cite

Introduction Noise obscures speech signal, causing auditory masking. The effects of this masking can be observed through the cortical auditory evoked potentials (CAEPs). White noise, in turn, has an effect on the auditory cortex, interfering, for example, with lexical decision making. Objective To analyze the effect of simultaneous masking by contralateral white noise on CAEPs elicited by speech stimuli. Methods Cross-sectional observational analytical study carried out with 15 participants of both sexes, who were submitted to CAEPs in two conditions: 1) without noise; 2) with white noise at 100 dBSPL intensity, contralaterally and simultaneously. To compare these conditions, the Student t test or the Wilcoxon test were used, depending on the sample normality. Differences with p values < 0.05 were considered significant. Results: When white noise was presented contralaterally and simultaneously to the CAEPs with speech stimulus, an increase in P1, N1 and P2 wave latencies was observed. P1 and P2 amplitudes and N1-P2 peak to peak amplitude also increased, unlike N1 amplitude, which decreased. The differences were significant for P1 and P2 wave latencies and for P2 wave amplitude. Conclusion The simultaneous masking effect was observed from the morphological alterations of the CAEPs with speech stimulus when white noise was presented in the contralateral ear. There was a significant increase in P1 and P2 wave latencies, as well as in P2 wave amplitude.

show abstract