Martino A M, Strick P L
Brain Res. 1987 Feb 24;404(1-2):307-12. doi: 10.1016/0006-8993(87)91384-9.
We investigated the patterns of corticospinal projection to different segments of the cervical spinal cord using retrograde transport of wheat germ agglutinin conjugated to horseradish peroxidase. We confirmed prior suggestions that the arcuate premotor area (APA) has a significant projection to the spinal cord. In addition, we observed that the corticospinal projection from the APA terminates in upper, but not lower segments of the cervical spinal cord. Furthermore, the region of the APA which projects to the cervical cord also projects to the arm area of the primary motor cortex on the crest of the precentral gyrus. Thus, we conclude that the APA projection to upper cervical segments is involved in the cortical control of arm movements.
我们使用与辣根过氧化物酶结合的小麦胚芽凝集素逆行运输法，研究了皮质脊髓束向颈髓不同节段的投射模式。我们证实了之前的推测，即弓状前运动区（APA）对脊髓有显著投射。此外，我们观察到来自APA的皮质脊髓投射终止于颈髓的上段而非下段。而且，投射到颈髓的APA区域也投射到中央前回顶部的初级运动皮层的臂区。因此，我们得出结论，APA向上颈段的投射参与了对臂部运动的皮质控制。
