Nambu A, Tokuno H, Inase M, Takada M
National Institute for Physiological Sciences, Okazaki, Japan.
Neurosci Lett. 1997 Dec 12;239(1):13-6. doi: 10.1016/s0304-3940(97)00877-x.
Employing double anterograde axonal tracing in combination with intracortical microstimulation, we examined the distribution patterns of corticosubthalamic inputs from forelimb representations of the dorsal (PMd) and ventral (PMv) divisions of the premotor cortex in the macaque monkey. The inputs from the PMd and PMv were distributed mainly in the medial aspect of the subthalamic nucleus (STN), in which their distribution areas overlapped each other. By the same experimental approach, we further compared corticosubthalamic input zones from the PMd/PMv with those from the primary motor cortex (MI) and the supplementary motor area (SMA). The input zones from the PMd/PMv and SMA largely overlapped in the medial aspect of the STN, whereas the input zones from the PMd/PMv and MI were virtually segregated mediolaterally in the STN.
我们采用双顺行轴突示踪技术并结合皮质内微刺激，研究了猕猴运动前皮质背侧（PMd）和腹侧（PMv）分区的前肢代表区向底丘脑的皮质-底丘脑输入的分布模式。来自PMd和PMv的输入主要分布在底丘脑核（STN）的内侧，其分布区域相互重叠。通过相同的实验方法，我们进一步比较了PMd/PMv与初级运动皮质（MI）和辅助运动区（SMA）的皮质-底丘脑输入区。PMd/PMv和SMA的输入区在STN内侧大部分重叠，而PMd/PMv和MI的输入区在STN内沿内外侧几乎是分开的。
