Effects of artifact rejection and Bayesian weighting on the auditory brainstem response during quiet and active behavioral conditions.

Title

Effects of artifact rejection and Bayesian weighting on the auditory brainstem response during quiet and active behavioral conditions.

Creator

Sanchez JT; Gans D

Publisher

American Journal of Audiology

Date

2006
2006-12

Description

PURPOSE: To evaluate the effects of 2 noise reduction techniques on the auditory brainstem response (ABR). METHOD: ABRs of 20 normal hearing adults were recorded during quiet and active behavioral conditions using 2 stimulus intensity levels. Wave V amplitudes and residual noise root-mean-square values were measured following the offline application of artifact rejection and Bayesian weighting. Repeated measures analysis of variance and Bonferroni adjusted pairwise t tests were utilized to evaluate significant main effects and interactions between the 2 noise reduction techniques. RESULTS: ABRs recorded during the quiet behavioral condition resulted in minimal differences in wave V amplitude and noise reduction improvement, suggesting that the 2 techniques were equally effective under ideal recording situations. During the active behavioral condition, however, the techniques differed significantly in the ability to preserve the evoked potential and reduce noise. Consequently, strict artifact rejection levels resulted in an inherent underestimation of wave V amplitudes when compared with the Bayesian approach. CONCLUSION: Artifact rejection had a detrimental effect on waveform morphology of the ABR. This could lead to difficulty in ABR interpretation when patients are active and ultimately result in diagnostic errors.

Subject

Adult; Female; Male; College; Analysis of Variance; Students; Artifacts; Evoked Potentials; Human; Descriptive Statistics; Repeated Measures; Post Hoc Analysis; Comparative Studies; T-Tests; Auditory; Brainstem; Noise – Prevention and Control

Rights

Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).

Pages

154–163

Issue

2

Volume

15

Citation

Sanchez JT; Gans D, “Effects of artifact rejection and Bayesian weighting on the auditory brainstem response during quiet and active behavioral conditions.,” NEOMED Bibliography Database, accessed May 10, 2021, https://neomed.omeka.net/items/show/6089.

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