NOTE ON MYELOARCHITECTONICS
NOTE ON MYELOARCHITECTONICS
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DOI：
10.1002/cne.901180202
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发表时间：
1962-01-01
影响因子：
2.5
通讯作者：
BRAITENBERG, V
中科院分区：
文献类型：
--
作者：
BRAITENBERG, V
大脑皮层结构的局部“结构”变化的描述对于任何对皮层线路的控制论解释都是最感兴趣的。然而，这些文献大多是不定量的，并且是基于模式感知的主观标准。目前的研究表明，如何测量光密度作为一个功能的深度在髓鞘制剂可以作为一个客观的标准，以区分面积差异。此外，不同层中（水平）髓鞘纤维的密度可以作为皮层内兴奋扩散量的指示，从而用于补充高尔基图的皮层，高尔基图经常遗漏髓鞘图所显示的内容，即长髓鞘连接。这些曲线表明，所谓的Baillarger纹中水平纤维的平均长度不能超过几百微米，而皮层下部的连接可能更为重要。给出了14个不同皮质区域的照片，并讨论了相应的密度图。该图显示了根据高尔基图对髓鞘纤维种群的解释。
The descriptions of local "architectonic" variations of structure in the cerebral cortex are of prime interest for any cybernetical interpretation of the cortical wiring. However, most of this literature is unquantitative and based on subjective criteria of pattern perception. The present study shows how measurements of optical density as a function of depth in myelin preparations can be used as an objective criterion for the distinction of areal differences. Moreover, the density of (horizontal) myelinated fibers in different layers can be taken as an indication of the amount of intracortical spread of excitation and thus used to supplement the Golgi picture of the cortex which frequently leaves out just what the myelin picture shows, i.e., the long, myelinated connections. The curves indicate that the average length of horizontal fibers in the so called striae of Baillarger cannot exceed of few hundred microns, while the connections in the lower part of the cortex may be much more important. Photographs of 14 different cortical regions are given and the corresponding densitometric graphs are discussed. A diagram shows the interpretation of the myelinated fiber population in terms of the Golgi picture.