Danilova N N, Astaf'ev S V
Department of Psychophysiology, Lomonosov State University, Moscow.
Zh Vyssh Nerv Deiat Im I P Pavlova. 1999 Jan-Feb;49(1):28-38.
Three-dimensional vector spaces were constructed by the method of principal components from large sets of cardiac rhythm spectra obtained in the state of rest and under informational load. The individual and group spaces of cardiac rhythm revealed three common factors having the maximal factor loads within the domain of action of metabolic (0.02-0.04 Hz), vascular (0.06-0.08 Hz), and respiratory (0.12-0.16 Hz) oscillators. Each particular cardiac spectrum in this universal autonomic space can be represented by a three-dimensional vector. Changes in the functional state are reflected in a specific trajectory of this vector in the space. It was found that coactivation of the metabolic, vascular, and respiratory oscillators in combination with a decrease in the heart rate and index of tension is positively correlated with efficiency of task performance and appears to reflect the orienting reflex. The vector autonomic space, in which the metabolic, vascular, and respiratory oscillators act, may be a useful instrument for distinguishing the mechanisms underlying the orienting and defensive reflexes.
通过主成分分析法，从静息状态和信息负荷状态下获得的大量心律谱构建三维向量空间。心律的个体和群体空间揭示了三个共同因素，这些因素在代谢（0.02 - 0.04赫兹）、血管（0.06 - 0.08赫兹）和呼吸（0.12 - 0.16赫兹）振荡器的作用范围内具有最大的因子负荷。在这个通用自主神经空间中，每个特定的心律谱都可以由一个三维向量表示。功能状态的变化反映在该向量在空间中的特定轨迹上。研究发现，代谢、血管和呼吸振荡器的共同激活，再加上心率和张力指数的降低，与任务执行效率呈正相关，似乎反映了定向反射。代谢、血管和呼吸振荡器起作用的向量自主神经空间，可能是区分定向反射和防御反射潜在机制的有用工具。
