伪随机体力负荷下心脏调节功能数学模型的研究  

STUDY OF MATHEMATICAL MODEL OF HUMAN HEART ADAPTATION FUNCTION UNDER PSEUDO-RANDOM MOTION LOAD

作　　者：李止戈[1] 李深[1] 林娟[1] 

机构地区：[1]首都师范大学计算机系,北京100037

出　　处：《中国生物医学工程学报》2002年第2期169-178,共10页Chinese Journal of Biomedical Engineering

摘　　要：为了能既定性又定量地分析人体的心脏调节功能 ,建立一种基于控制论信息论的原理来检查人体心功能优劣的方法 ,我们对心功能正常与异常对照组 ,分别在直立位与仰卧位下 ,进行了伪随机运动负荷实验 ;采用相关分析法和参数信号模型法 ,建立了对应的心率曲线数学模型 ;运用逐步判别法和Logistic函数判别法 ,对所得的模型参数进行了心功能优劣的判别分类 ;运用最大熵谱分析的Burg递推程序和FPE判阶准则 ,证明了所选模型阶次的正确性 ;建立了一种用伪随机体力负荷做输入用心率做输出 ,来判断心功能优劣的检查方法。In order to analyze the adaptation function of human heart qualitatively and quantitatively and set up a way of inspecting heart function by using cybernetics and information theory, we proceeded pseudo-random motion load examinations under vertical and supine position in testee with normal and abnormal heart function. We used correlation analysis and parametric signal model to build respective mathematical models. We also used stepwise discrimination and Logistic Function discrimination to classify and discriminate the model parameters by heart function condition. The Burg′s recurrence formula and FPE order discrimination rule of maximum entropy spectrum analysis were used to prove the correctness of model order that we chosen. We also established an inspecting way of examining the condition of heart function by using the pseudo-random physical strength load as input and rhythm of heart as outpat.

关 键 词：数学模型 相关分析法 参数信号模型法 模式识别 心脏调节功能 

分 类 号：R318.03[医药卫生—生物医学工程]