Department of Medical Informatics, University of Białystok, Białystok, Poland.
Reprod Sci. 2010 Jul;17(7):667-72. doi: 10.1177/1933719110366482. Epub 2010 Apr 19.
It was shown earlier that nonlinear processes probably generate uterine contractions. In this study, the nonlinear synchronization measures (the mutual correlation dimension, the cross-approximate entropy, the mutual information and the nonlinear interdependencies) were employed to analyze the association between two time series representing the uterine contraction activity. Here the notion of synchronization is used in a loose sense as the synonym of correlation, the similarity of the signals or the similarity of their dynamics. The signals were recorded from the different topographic regions of the uterus: the cervix and the fundus. The results obtained by means of different algorithms are different but qualitatively similar for the checked methods.
先前已经表明，非线性过程可能会产生子宫收缩。在这项研究中，采用了非线性同步度量（互相关维数、交叉近似熵、互信息和非线性相互依赖）来分析代表子宫收缩活动的两个时间序列之间的关联。这里，同步的概念被用于一种松散的意义，即同义词相关、信号相似或其动力学相似。信号是从子宫的不同解剖区域（宫颈和底部）记录的。不同算法得到的结果对于所检查的方法是不同的，但在质量上是相似的。
