Ueki A, Yoshida J
Appl Neurophysiol. 1976;39(3-4):296-301.
The caudate efferent fibers to the globus pallidus are inhibitory in nature. The pallidothalamic fibers are also inhibitory, exerting monosynaptic IPSPs on the thalamic cells located anteroventrally to the ventrolateral nucleus. Therefore, these two inhibitory neuronal circuits make a double inhibitory chain. To operate the inhibitory circuit, excitatory input to the pallidum is necessary. Stimulation of the ipsilateral brain stem including lemniscus medialis, mesencephalic reticular formation and some other structures, produces short latency excitation of the pallidal cells.
尾状核至苍白球的传出纤维本质上是抑制性的。苍白球至丘脑的纤维也是抑制性的，对位于腹外侧核腹前方的丘脑细胞施加单突触抑制性突触后电位。因此，这两个抑制性神经元回路形成了一个双重抑制链。为了操作抑制性回路，需要有兴奋性输入到苍白球。刺激同侧脑干，包括内侧丘系、中脑网状结构和其他一些结构，会产生苍白球细胞的短潜伏期兴奋。
