%0 Journal Article
%T THE UNSTABLE PERIODIC ORBITS EMBEDDED IN HEART VARIABILITY OF HEALTHY SUBJECTS<br>健康人心率变异性中的不稳定周期轨道
%A WANG Shou-yan
%A JIAN Zhong
%A NIU You-guo
%A ZHANG Li-fan
%A <br>王守岩
%A 菅忠
%A 牛有国
%A 张立藩
%J 生物物理学报
%D 2001
%I 
%X To characterize the deterministic dynamics in heart rhythm, the unstable periodic orbit analysis were the RR interval time series of healthy young men. The unstable periodic orbits (UPO) with statistical significance and the hierarchies of UPOs(period 1, period 2, period 3 and period 4) have been extracted from the heart rhythm. It suggests that in healthy young men, the dynamics of normal heart rhythm contains significant deterministic components. Furthermore, the inherent non-stationary of the heart rhythm can be shown by developing of period 1 orbit. The results provide further evidences to verify that chaos dynamics exists in heart rate variability.
%K Cardiac rhythm
%K Heart rate variability
%K Unstable periodic orbit
%K Nonlinear dynamics
%K Chaos<br>心脏节律
%K 心率变异性
%K 不稳定周期轨道
%K 非线性动力学
%K 混沌
%K 心电图
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=E0C9D9BBED813D6674AC13E942EAC86D&aid=71EBFF971C5612A8&yid=14E7EF987E4155E6&vid=BCA2697F357F2001&iid=CA4FD0336C81A37A&sid=5E25104E99903E8A&eid=A8DE7703CC9E390F&journal_id=1000-6737&journal_name=生物物理学报&referenced_num=3&reference_num=13