Localization of the pyramidal tract in the internal capsule by whole brain dissection
Localization of the pyramidal tract in the internal capsule by whole brain dissection
复制标题
通过全脑解剖定位内囊锥体束
作者：
E. Ross
用钝化技术解剖6个人脑，水平切片，建立锥体束与内囊的三维关系。在所有情况下，锥体束在后肢的前半部进入嘴囊，并在更尾部的水平层面上逐渐移位到后肢的后半部。这些观察结果解决了目前关于内囊后肢锥体束的确切解剖位置的争议。这一争议的产生是因为以前的作者没有考虑到锥体束在穿过后肢时不断变化的吻尾/前后解剖结构。
Six human brains were dissected by blunt technique and sectioned horizontally to establish the three-dimensional relationships of the pyramidal tract and the internal capsule. In all instances, the pyramidal tract entered the rostral capsule in the anterior half of the posterior limb and progressively shifted into the posterior half of the posterior limb in the more caudal horizontal sections. These observations resolve the current controversy about the exact anatomic location of the pyramidal tract in the posterior limb of the internal capsule. This controversy arose because previous authors failed to consider the changing rostrocaudal/anterior-posterior anatomy of the pyramidal tract as it courses through the posterior limb.