Kisliakov Iu Ia, Levkovich Iu I, Shumilova T E, Vershinina E A, Volynets N I
Fiziol Zh SSSR Im I M Sechenova. 1983 Oct;69(10):1272-9.
To measure dynamic characteristics of linear velocity of the blood flow in microvessels on the surface of rat's brain, the method of accelerated cinemicrography was used. The blood flow velocity varied from 500 to 5000 mu/sec in microvessels with diameter of 7-15 mu. The blood flow fluctuated with the rate of 1-3 oscillations per second and the amplitude 20-50% of the average value. Auto- and crosscorrelation analysis of the processes revealed in 35% of the cases a positive correlation between shifts of velocities and the frequency of their occurrence. No correlation existed between rapid changes of the blood flow in adjacent or distant microvessels. The sharp changes of blood flow seem to be due to periodical passage of leucocytes and accumulated erythrocytes which increase resistance against the blood flow in microvessels.
为了测量大鼠脑表面微血管中血流线性速度的动态特性，采用了加速电影显微摄影法。在直径为7 - 15微米的微血管中，血流速度在500至5000微米/秒之间变化。血流以每秒1 - 3次振荡的频率波动，振幅为平均值的20 - 50%。对这些过程的自相关和互相关分析表明，在35%的情况下，速度变化与其出现频率之间存在正相关。相邻或远处微血管中血流的快速变化之间不存在相关性。血流的急剧变化似乎是由于白细胞和积聚的红细胞周期性通过，这增加了微血管中血流的阻力。
