FUNCTIONAL-ORGANIZATION OF THE VENTRAL LATERAL GENICULATE COMPLEX OF THE TREE SHREW (TUPAIA-BELANGERI) .2. CONNECTIONS WITH THE CORTEX, THALAMUS, AND BRAIN-STEM
FUNCTIONAL-ORGANIZATION OF THE VENTRAL LATERAL GENICULATE COMPLEX OF THE TREE SHREW (TUPAIA-BELANGERI) .2. CONNECTIONS WITH THE CORTEX, THALAMUS, AND BRAIN-STEM
复制标题
DOI：
10.1002/cne.903280103
复制
发表时间：
1993-02-01
影响因子：
2.5
通讯作者：
FRIEDERICHECSY, B
中科院分区：
文献类型：
--
作者：
CONLEY, M;FRIEDERICHECSY, B
用WGA-HRP逆行和顺行追踪树鼩腹外侧膝状体复合体（GLv）的联系。这些结果支持了早期的发现，即该物种的GLv由两个主要部分组成，外侧和内侧，每个部分与脑干和大脑皮层的连接都不同。外侧区的联系表明它参与了视觉感觉功能：它接受来自视网膜、纹状皮质、顶盖前区和上级丘的视网膜接受层的输入。这些联系有助于明确GLv的内部和外部亚部，因为来自上级丘和顶盖前体的投射都终止于外部亚部，而每一个又接受来自内部亚部的投射。内侧亚部的联系表明这部分核与视觉功能有关。因此，中尾侧亚部投射到脑桥核、红核前区和中央外侧核。中尾侧亚部也接受来自小脑外侧核的投射，因此GLv-脑桥-小脑-GLv环主要涉及GLv的一个亚部。中喙亚部接受顶盖前皮质和顶叶皮质的投射。其输出主要针对上级丘的中间层和深层。所有这些靶点的GLv，脑桥，红核前区，和深层的上级colliculus，是已知的，在协调头部和眼球的movement.Additional连接的GLv与前庭核，板内核，下丘脑，和面部运动核也被描述。
Connections of the ventral lateral geniculate complex (GLv) in the tree shrew were traced by anterograde and retrograde transport of WGA-HRP. The results buttress earlier findings that GLv in this species is composed of two main divisions, lateral and medial, each of which differs in its connections with the brainstem and cerebral cortex. The connections of the lateral division (GLv) suggest that it participates in visuosensory functions: it receives input from the retina, striate cortex, pretectum, and retino-recipient layers of the superior colliculus. These connections help clarify the identification of the internal and external subdivisions of GLv inasmuch as projections from both the superior colliculus and pretectum terminate in the external subdivision and each, in turn, receives a projection from the internal subdivision.Connections of the medial division suggest that this part of the nucleus is involved with visuomotor functions. Thus, the medio-caudal subdivision projects to the pontine nuclei, the prerubral field and the central lateral nucleus. The medio-caudal subdivision also receives projections from the lateral cerebellar nucleus, so that the GLv-ponto-cerebello-GLv loop involves mainly one subdivision of GLv. The medio-rostral subdivision receives projections from the pretectum and parietal cortex. Its output is directed primarily at the intermediate and deep layers of the superior colliculus. All of these targets of GLv, the pons, prerubral field, and deep layers of the superior colliculus, are known to play a role in the coordination of head and eye movements.Additional connections of GLv with the vestibular nuclei, intralaminar nuclei, hypothalamus, and facial motor nucleus are also described.