Wise S P, Tanji J
J Comp Neurol. 1981 Jan 20;195(3):433-51. doi: 10.1002/cne.901950305.
Single-unit recording and intracortical microstimulation techniques have been employed in unanesthetized monkeys in order to ascertain the relative responsiveness of the supplementary motor cortex (MII) and the precentral motor cortex (MI) to a controlled peripheral stimulus. The hindlimb representation was explored to facilitate comparison of MI and MII sensitivity in the same animal. Two main findings have emerged: (i) Many fewer neurons in MII respond to the peripheral stimulus and those that do have much weaker responses than neurons in MI. (ii) The hindlimb representation of MII and the tail representation of MI appear to be considerably further rostral than depicted in the classical maps. The latter finding serves to resolve a discrepancy between the classical physiological and cytoarchitectonic maps for this region of cortex.
为了确定辅助运动皮层（MII）和中央前运动皮层（MI）对受控外周刺激的相对反应性，在未麻醉的猴子身上采用了单神经元记录和皮层内微刺激技术。探索后肢代表区以促进同一动物中MI和MII敏感性的比较。出现了两个主要发现：（i）MII中对外周刺激作出反应的神经元比MI中的神经元少得多，而且反应也弱得多。（ii）MII的后肢代表区和MI的尾部代表区似乎比经典图谱中描绘的位置更靠前。后一个发现有助于解决该皮层区域经典生理图谱和细胞构筑图谱之间的差异。
