On wavelet analysis of auditory evoked potentials
On wavelet analysis of auditory evoked potentials
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DOI：
10.1016/j.clinph.2003.11.016
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发表时间：
2004-05-01
影响因子：
4.7
通讯作者：
Wilson, WJ
中科院分区：
文献类型：
--
作者：
Bradley, AP;Wilson, WJ
目的：为了确定一个优选的小波变换（WT）程序的多分辨率分析（MRA）的听觉诱发电位（AEP）。方法：一些WT算法，母小波，和预处理技术进行了检查，通过关键的理论讨论，然后通过实验测试的关键点使用真实的和模拟的听觉脑干反应（ABR）波形。从这些检查的结论，然后测试一个规范的ABR dataset.Results：各种实验的结果详细reported.Conclusions：最佳AEP WT MRA是最有可能发生时，使用过采样离散小波变换（DWT），利用平滑（规则性大于或等于3）且对称（线性相位）母小波和反射边界扩展策略。本研究证明了与AEP WT MRA相关的4个相互关联的问题的实际重要性，并解释了如何最大限度地减少潜在伪影，即移位方差、相位失真、重建平滑度和边界伪影。(C)2004年国际临床神经生理学联合会。由Elsevier爱尔兰有限公司出版。保留所有权利。
Objective: To determine a preferred wavelet transform (WT) procedure for multi-resolution analysis (MRA) of auditory evoked potentials (AEP).Methods: A number of WT algorithms, mother wavelets, and pre-processing techniques were examined by way of critical theoretical discussion followed by experimental testing of key points using real and simulated auditory brain-stem response (ABR) waveforms. Conclusions from these examinations were then tested on a normative ABR dataset.Results: The results of the various experiments are reported in detail.Conclusions: Optimal AEP WT MRA is most likely to occur when an over-sampled discrete wavelet transformation (DWT) is used, utilising a smooth (regularity greater than or equal to3) and symmetrical (linear phase) mother wavelet, and a reflection boundary extension policy.Significance: This study demonstrates the practical importance of, and explains how to minimize potential artefacts due to, 4 inter-related issues relevant to AEP WT MRA, namely shift variance, phase distortion, reconstruction smoothness, and boundary artefacts. (C) 2004 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All rights reserved.