Caudal and cephalic influences of the brain stem reticular formation.
Caudal and cephalic influences of the brain stem reticular formation.
复制标题
脑干网状形成的尾部和头部影响。
DOI：
10.1152/physrev.1950.30.4.459
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发表时间：
1950
影响因子：
33.6
通讯作者：
H. Magoun
中科院分区：
文献类型：
--
作者：
H. Magoun
当中枢神经系统的头端在系统发育中专注于个体作为一个整体的行为时，与组成部分相比，大脑半球和小脑被附加到颅神经轴的外部，同时，相当大体积的神经组织被添加到其内部，这就是所谓的脑干的网状结构。从许多方面来看，这种脑干网状结构似乎并不是一个全新的发展，而是整个脊髓中间灰质中存在的中间神经元集合的嘴部扩大和特化。两者与中央管具有相同的地形关系，因此介于明确的传入和传出神经元件之间。来自脊髓中间神经元的上升和下降的本体脊髓连接，服务于脊髓内的节间活动，类似地是脑干网状结构的类似连接的原型，这使得它能够影响尾部和头部神经水平的活动。通过其下行连接（2、83、84、6、15、16、79、80），脑干的网状结构能够改变脊髓内的活动，减少或增强它，并且空间上不同的部分施加这些对比影响。
HEN THE HEAD END of the central nervous system became preoccupied in phylogeny with behavior of the individual as a whole, as contrasted with that within component segments, the cerebral hemispheres and cerebellum were appended to the outside of the cranial neuraxis and, at the same time, a considerable volume of neural tissue was added to its interior, in what is known as the reticular formation of the brain stem. In many respects this brain stem reticular formation appears not so much to have been a completely new development as a rostra1 enlargement and specialization of interneuron collections present throughout the intermediate grey of the cord. Both bear the same topographical relation to the central canal and are so interposed between definitely afferent and efferent neural elements. Ascending and descending propriospinal connections from spinal interneurons, serving intersegmental activity within the cord, similarly are prototypes of comparable connections of the brain stem reticular formation, which enable it to influence activity at caudal and cephalic neural levels. By means of its descending connections (2, 83, 84, 6, 15, 16, 79, 80), the reticular formation of the brain stem is capable of modifying activity within the cord, either to reduce or augment it, and spatially distinct portions exert these contrasting influences.