Renyi entropy measures of heart rate Gaussianity

被引：69

作者：

Lake, DE ^{[1
]}

机构：

[1] Univ Virginia, Div Cardiovasc, Charlottesville, VA 22908 USA

来源：

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING | 2006年 / 53卷 / 01期

关键词：

entropy rate; Gaussianity; heart rate variability; Renyi entropy; SampEn;

D O I：

10.1109/TBME.2005.859782

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Sample entropy and approximate entropy are measures that have been successfully utilized to study the deterministic dynamics of heart rate (HR). A complementary stochastic point of view and a heuristic argument using the Central Limit Theorem suggests that the Gaussianity of HR is a complementary measure of the physiological complexity of the underlying signal transduction processes. Renvi entropy (or q-entropy) is a widely used measure of Gaussianity in many applications. Particularly important members of this family are differential (or Shannon) entropy (q = 1) and quadratic entropy (q = 2). We introduce the concepts of differential and conditional Renyi entropy rate and, in conjunction with Burg's theorem, develop a measure of the Gaussianity of a linear random process. Robust algorithms for estimating these quantities are presented along with estimates of their standard errors.

引用

页码：21 / 27

页数：7