Baldissera F, ten Bruggencate G
Acta Physiol Scand. 1976 Feb;96(2):233-49. doi: 10.1111/j.1748-1716.1976.tb10192.x.
Stimulation of the contralateral red nucleus evoked monosynaptic EPSPs in 14 of 82 ventral spinocerebellar tract neurones. In some of these cells the monosynaptic EPSP was followed by a disynaptic IPSP. The remaining cell population received di- or polysynaptic PSPs from the rubrospinal tract, either EPSPs or IPSPs or both. Convergence of the rubrospinal tract onto interneurones of the segmental pathways projecting to VSCT cells was demonstrated. Rubrospinal volleys facilitated disynaptic Ia IPSPs evoked in VSCT neurones from both flexors and extensors, as well as disynaptic Ib IPSPs. Facilitation of the Ia interneurones was disynaptic whereas facilitation of Ib interneurones was monosynaptic. Disynaptic rubrospinal EPSPs and IPSPs were facilitated by volleys in ipsi- as well as in contralateral cutaneous and high threshold muscle afferents. The complex pattern of projections from the rubrospinal tract onto VSCT neurones and the related reflex pathways gives further support to the hypothesis that these tract cells convey information on transmission through interneurones of the spinal segmental mechanisms.
刺激对侧红核在82个腹侧脊髓小脑束神经元中的14个中诱发了单突触兴奋性突触后电位（EPSP）。在其中一些细胞中，单突触EPSP之后跟着一个双突触抑制性突触后电位（IPSP）。其余细胞群体从红核脊髓束接受双突触或多突触的突触后电位（PSP），可以是EPSP、IPSP或两者皆有。已证实红核脊髓束会聚到投射至腹侧脊髓小脑束细胞的节段性通路的中间神经元上。红核脊髓冲动增强了由屈肌和伸肌在腹侧脊髓小脑束神经元中诱发的双突触Ia类IPSP，以及双突触Ib类IPSP。对Ia类中间神经元的增强是双突触的，而对Ib类中间神经元的增强是单突触的。同侧以及对侧皮肤和高阈值肌肉传入冲动的 volley 增强了双突触红核脊髓EPSP和IPSP。红核脊髓束投射到腹侧脊髓小脑束神经元上的复杂模式以及相关的反射通路，进一步支持了这样一种假说，即这些束细胞通过脊髓节段机制的中间神经元传递有关信息。
