A note on fractal dimensions of biomedical waveforms

被引：39

作者：

Raghavendra, B. S. ^{[1
]}

Dutt, D. Narayana ^{[1
]}

机构：

[1] Indian Inst Sci, Dept Elect Commun Engn, Bangalore 560012, Karnataka, India

来源：

COMPUTERS IN BIOLOGY AND MEDICINE | 2009年 / 39卷 / 11期

关键词：

Fractal dimension; Katz's method; Higuchi's method; Estimation accuracy; Waveform amplitude; Sampling frequency; Electroencephalogram; TIME-SERIES;

D O I：

10.1016/j.compbiomed.2009.08.001

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In this paper, we study performance of Katz method of computing fractal dimension of waveforms, and its estimation accuracy is compared with Higuchi's method. The study is performed on four synthetic parametric fractal waveforms for which true fractal dimensions can be calculated, and real sleep electroencephalogram. The dependence of Katz's fractal dimension on amplitude, frequency and sampling frequency of waveforms is noted. Even though the Higuchi's method has given more accurate estimation of fractal dimensions, the study suggests that the results of Katz's based fractal dimension analysis of biomedical waveforms have to be carefully interpreted. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1006 / 1012

页数：7

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