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[猫脑网状结构的相互作用]

[Interaction of reticular structures in the brain of the cat].

作者信息

Okudzhava V M, Mestvirishvili L P, Papuashvili N S, Bagashvili T I

出版信息

Zh Vyssh Nerv Deiat Im I P Pavlova. 1985 Sep-Oct;35(5):891-9.

PMID:4072405
Abstract

In acute and chronic experiments on 35 cats an inhibitory influence was found of the caudal reticular nucleus of pons Varolii on unit activity of the sensorimotor cortex and dorsal part of the midbrain reticular formation. The influence of this structure on unit activity of the ventral part of the midbrain reticular formation was mainly of a facilitatory character. Activation of the ventral part inhibited the unit activity of the dorsal part of the same structure. Consequently, the caudal reticular nucleus of pons Varolii elicits inhibition at the level not only of the cerebral cortex but also of the midbrain reticular formation (of its dorsal part). The character of these influences coincides with that of unit activity changes of these two areas of the midbrain reticular formation during the development of the paradoxical phase of sleep. The obtained facts must underlie the stopping of convulsive activity in this phase of sleep.

摘要

在对35只猫进行的急性和慢性实验中,发现脑桥尾侧网状核(Varolii桥)对感觉运动皮层和中脑网状结构背侧部分的单位活动有抑制作用。该结构对中脑网状结构腹侧部分单位活动的影响主要是易化性的。腹侧部分的激活抑制了同一结构背侧部分的单位活动。因此,脑桥尾侧网状核不仅在大脑皮层水平,而且在中脑网状结构(其背侧部分)水平都引起抑制。这些影响的特征与睡眠反常期发展过程中中脑网状结构这两个区域单位活动变化的特征一致。所获得的这些事实必定是该睡眠阶段惊厥活动停止的基础。

相似文献

1
[Interaction of reticular structures in the brain of the cat].[猫脑网状结构的相互作用]
Zh Vyssh Nerv Deiat Im I P Pavlova. 1985 Sep-Oct;35(5):891-9.
2
[Effect of stimulation of rostral portions of the midbrain reticular formation on the cat motor cortex].[刺激中脑网状结构嘴侧部分对猫运动皮层的影响]
Zh Vyssh Nerv Deiat Im I P Pavlova. 1976 Nov-Dec;26(6):1268-75.
3
[Strychnine-neuronographic study of orbital cortex projections to structures of the pons varolii].
Fiziol Zh SSSR Im I M Sechenova. 1976 Dec;62(12):1760-6.
4
[Neuronal mechanisms of reticulocortical activation].[网状皮质激活的神经元机制]
Zh Vyssh Nerv Deiat Im I P Pavlova. 1981 Jan-Feb;31(1):129-39.
5
[Electrophysiologic analysis of efferent projections of the cerebellar fastigial nucleus of cats].[猫小脑顶核传出投射的电生理分析]
Fiziol Zh SSSR Im I M Sechenova. 1980 Aug;66(8):1171-80.
6
[Evoked responses and impulse activity of the neocortex during the startle response following stimulation of the midbrain reticular formation].
Zh Vyssh Nerv Deiat Im I P Pavlova. 1980 Jan-Feb;30(1):97-104.
7
[Effect of a dominant focus in the midbrain reticular formation on the functional state of the motor analyzer].[中脑网状结构优势灶对运动分析器功能状态的影响]
Zh Vyssh Nerv Deiat Im I P Pavlova. 1980 Nov-Dec;30(6):1272-8.
8
[Changes in various behavioral reactions and the character of cerebral bioelectrical activity in the cat brain while falling asleep under conditions of polarization of individual brain structures].[在猫脑单个脑结构极化条件下入睡时猫脑各种行为反应及脑生物电活动特征的变化]
Fiziol Zh SSSR Im I M Sechenova. 1973 Mar;59(3):367-72.
9
[Responses of sensomotor cortex neurons of rats to stimulation of the midbrain reticular formation].[大鼠感觉运动皮层神经元对中脑网状结构刺激的反应]
Zh Evol Biokhim Fiziol. 1977 May-Jun;13(3):391-7.
10
[Function of the superior colliculi of the corpora quadrigemina during creation of a local focus of increased excitability in the mesencephalic reticular formation and sensomotor cortex].[中脑四叠体上丘在中脑网状结构和感觉运动皮层中产生局部兴奋性增高焦点过程中的作用]
Zh Vyssh Nerv Deiat Im I P Pavlova. 1984 Jan-Feb;34(1):115-23.

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