当前位置: X-MOL 学术Biophysics › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
The Features of the Nonlinear Dynamics of the Microcirculation Parameters of the Upper Limbs under Perturbation
Biophysics Pub Date : 2021-04-27 , DOI: 10.1134/s0006350921010206
L. V. Mezentseva

This study explored the nonlinear dynamics of the variability of microcirculatory blood flow signals in symmetrical areas of human upper limbs in the resting state and during perturbation. The perturbation was physical activity, that is, swinging of left or right arm in an upright position for 1 min. Laser Doppler flowmetry was used to measure the microflow in five healthy volunteers. Signal sensors were fixed symmetrically on the lower parts of the right and left shoulders (3 cm above the elbow bend). The Hurst index, the Hausdorf dimension, the geometric properties of the phase portraits, and the statistical characteristics of perfusion were estimated. Overall, the results indicate that perturbation effects lead to changes in the parameters of nonlinear dynamics of microcirculation in the upper limbs, which are characterized by an increased level of persistence of the arm side that experienced a perturbation, by an increased fractal dimension of chaos in the left arm when perturbations occurred, as well as the inverse dynamics of the left–right asymmetry of the attractors.



中文翻译:

摄动时上肢微循环参数的非线性动力学特征

这项研究探讨了在静息状态和摄动过程中人类上肢对称区域微循环血流信号变化的非线性动力学。摄动是身体活动,也就是说,左臂或右臂在竖直位置摆动1分钟。激光多普勒血流仪用于测量五名健康志愿者的微血流。信号传感器对称地固定在左右肩膀的下部(肘部弯曲上方3 cm)。估计了赫斯特指数,豪斯多夫维数,相像的几何特性以及灌注的统计特征。总体而言,结果表明摄动效应导致上肢微循环非线性动力学参数的变化,

更新日期:2021-04-28
down
wechat
bug