Weinrich M, Wise S P
J Neurosci. 1982 Sep;2(9):1329-45. doi: 10.1523/JNEUROSCI.02-09-01329.1982.
The relationship of single unit activity to limb movements guided by visuospatial cues supports the view that the premotor cortex is a distinct cortical field within the somatic sensorimotor cortex. The premotor cortex is similar to the precentral motor cortex (MI) in that most of its units are clearly related to voluntary movements but differs from MI by its higher threshold for microstimulation-evoked movements, its cytoarchitecture, and the presence of a larger population of neurons with activity related to the occurrence of visuospatial signals rather than, or in addition to, the movement cued by those signals.
单个神经元活动与由视觉空间线索引导的肢体运动之间的关系支持了这样一种观点，即运动前皮层是躯体感觉运动皮层内一个独特的皮层区域。运动前皮层与中央前运动皮层（MI）相似，因为其大多数神经元都与随意运动明显相关，但与MI不同的是，它对微刺激诱发运动的阈值更高，其细胞结构不同，并且存在大量神经元，其活动与视觉空间信号的出现有关，而不是与这些信号所提示的运动有关，或者除了与这些信号所提示的运动有关之外还与视觉空间信号的出现有关。
