作者
Raul Alcaraz, Jose Joaquin Rieta
发表日期
2010/1/1
来源
Biomedical Signal Processing and Control
卷号
5
期号
1
页码范围
1-14
出版商
Elsevier
简介
The application of non-linear metrics to physiological signals is a valuable tool because “hidden information” related to underlying mechanisms can be obtained. In this respect, approximate entropy (ApEn) is the most popular non-linear regularity index that has been applied to physiological time series. However, ApEn presents some shortcomings, such as bias, relative inconsistency and dependence on the sample length. A modification of ApEn, named sample entropy (SampEn), was introduced to overcome these deficiencies. Recently, in the context of electrocardiography, SampEn has been applied to study non-invasively atrial fibrillation (AF), which is the most common arrhythmia encountered in clinical practice with unknown mechanisms provoking its onset and termination. Useful clinical information, that could help for a better understanding of AF mechanisms, has been obtained through the application of …
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R Alcaraz, JJ Rieta - Biomedical Signal Processing and Control, 2010