Ianson Z A, Markin V P
Zh Vyssh Nerv Deiat Im I P Pavlova. 1976 May-Jun;26(3):619-25.
A spectral-correlation analysis of electrical activity of the rabbit cerebral cortex was made with the use of Dnieper computer, after electrical stimulation (100-250 c/s) of the midbrain reticular formation, the thalamic nonspecific formations (midline nuclei) and different nuclei of the posterior part of the hypothalamic area (ventromedial and posterior hypothalamic nuclei and the lateral field). The background spectrograms were characterized by a high variability; their frequencies ranged from 0,5 to 12 c/s. Under the influence of the electrical stimulation of the indicated formations, a well-pronounced, dominating peak appeared in the spectrograms of the cortical EEG, in the band from 4 to 7 c/s, and the similarity of biopotentials in this rhythm increased. The experimental data show that enhancement of spatial synchronization of the cortical biopotentials under conditions of electrical stimulation of the indicated subcortical formations is based on increased rhythmic oscillations within the theta-band and on a greater coherence in this range.
在使用第聂伯计算机对家兔大脑皮层电活动进行频谱相关分析时,对中脑网状结构、丘脑非特异性结构(中线核)以及下丘脑区域后部不同核团(腹内侧和下丘脑后核以及外侧区)进行电刺激(100 - 250次/秒)。背景频谱图具有高度变异性;其频率范围为0.5至12次/秒。在对上述结构进行电刺激的影响下,皮层脑电图的频谱图中在4至7次/秒频段出现了一个明显的主导峰值,并且该节律下生物电位的相似性增加。实验数据表明,在对上述皮层下结构进行电刺激的条件下,皮层生物电位空间同步性的增强基于θ频段内节律性振荡的增加以及该范围内更大的相干性。