PROJECTIONS OF THE PALLIDAL COMPLEX - AUTORADIOGRAPHIC STUDY IN THE CAT
PROJECTIONS OF THE PALLIDAL COMPLEX - AUTORADIOGRAPHIC STUDY IN THE CAT
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DOI：
10.1016/0306-4522(79)90060-5
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发表时间：
1979-01-01
期刊：
影响因子：
3.3
通讯作者：
NAUTA, HJW
中科院分区：
文献类型：
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作者：
NAUTA, HJW
采用放射自显像示踪的方法，分别对猫的外白球段（苍白球）和内白球段（球髓内核）的传出投射进行了研究。向外苍白叶段注射氚化氨基酸导致轴突系统的标记，这些轴突系统分布在丘脑下核，并以稀疏的密度分布在丘脑网状核、黑质、尾状核、壳核和尚未确定的皮质区域。向内白斑段注射氚化氨基酸导致轴突系统的标记，这些轴突系统分布在丘脑腹外侧-腹前复合体、正中中央、外侧束核和桥脚中脑被盖核、紧部。在束状旁核、Forel野核和靠近脚柄被核、紧实部的中脑被核的吻侧也可能发生不太明显的终止。这一事实和先前的研究表明，如果苍白质复合体只涉及运动功能，那么它的投射比预期的要广泛得多，这就提出了关于基底神经节功能组织的问题。
The efferent projections of the external pallidal segment (globus pallidus) and the internal pallidal segment (entopeduncular nucleus) were studied in separate experiments in the cat by the autoradiographic tracing method. Injections of tritiated amino acids into the external pallidal segment resulted in labeling of axon systems distributed to the subthalamic nucleus and in sparser density to the nucleus reticularis thalami, the substantia nigra, the caudate nucleus, the putamen and as yet undefined areas of the cortex. Injections of tritiated amino acids into the internal pallidal segment resulted in labeling of axon systems distributed to the ventrolateral-ventroanterior complex of the thalamus, to the centrum medianum, the lateral habenular nucleus and the mesencephalic nucleus tegmenti pedunculopontinus, pars compacta. Less prominent termination may also occur in the parafascicular nucleus, the nuclei of the fields of Forel and in the mesencephalic tegmentum rostral to the nucleus tegmenti pedunculopontinus, pars compacta. The fact that this and previous studies show that the projections of the pallidal complex are more widespread than would be expected if it was only involved in motor functions, raises questions about the functional organization of the basal ganglia.