Nemtsov A V
Neirofiziologiia. 1979;11(4):311-20.
Background and optically modified impulse activity of neurons in visual cortex of unanaesthetized rabbits was analyzed. By means of joint interval histograms it was shown that neurons can be distinguished by the ratio of burts (intervals to 15-40 ms) and extraburst activity and by the shape of transition from one from of activity to another. The extraburst activity comprises 63% of impulses and its ratio to bursts of 2 or 3 and more impulses was 27:3:1. Burts impulse distribution showed a relative stability of timing pattern within bursts and small number of burst impulses (2.4 on the average). Bursts of 3 and more impulses (3.6 on the average) are not rhythmical and 79% of them contained long intervals (18.6 +/- 2.4 ms) before the shortest one (7.9 +/- 0.9 ms). Optical stimulation resulted in bursts containing core impulses, shorter intervals and beginning with the shortest interval in most neurons. This may testify to the increase of the EPSP steepness and amplitude. 20% of cortical neurons showed background bursts containing more impulses and shorter intervals in comparison with evoked bursts.
分析了未麻醉家兔视觉皮层神经元的背景和光学修饰冲动活动。通过联合间隔直方图表明，神经元可通过爆发（15 - 40毫秒间隔）与爆发外活动的比率以及从一种活动形式向另一种活动形式转变的形状来区分。爆发外活动占冲动的63%，其与2个或3个及更多冲动的爆发的比率为27:3:1。爆发冲动分布显示爆发内定时模式相对稳定且爆发冲动数量较少（平均2.4个）。3个及更多冲动的爆发（平均3.6个）无节律，其中79%在最短间隔（7.9±0.9毫秒）之前包含长间隔（18.6±2.4毫秒）。光学刺激导致大多数神经元的爆发包含核心冲动、更短间隔且以最短间隔开始。这可能证明兴奋性突触后电位（EPSP）的陡度和幅度增加。20%的皮层神经元显示背景爆发与诱发爆发相比包含更多冲动和更短间隔。
