Iacoboni Marco
Ahmanson-Lovelace Brain Mapping Center, Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, Brain Research Institute, David Geffen School of Medicine at UCLA, Los Angeles, USA.
Neuropsychologia. 2006;44(13):2691-9. doi: 10.1016/j.neuropsychologia.2006.04.029. Epub 2006 Jun 8.
The posterior parietal cortex is a fundamental structure for visuo-motor integration and control. Here I discuss recent transcranial magnetic stimulation (TMS) and functional magnetic resonance imaging (fMRI) studies that I interpret as suggesting four concepts. The evolutionary process has enlarged the human posterior parietal cortex while still preserving the internal structure of the posterior parietal cortex of other primates. Visuo-motor control in the posterior parietal cortex may be implemented by coding primarily action goals. The lateralization of visuo-motor functions in the posterior parietal cortex suggests that the left posterior parietal cortex is more concerned with tool use and the right posterior parietal cortex is more concerned with imitation of the actions of others. Finally, visuo-motor inter-hemispheric transfer through parietal callosal fibers occurs at the level of 'motor intention'.
顶叶后皮质是视觉运动整合与控制的重要结构。在此，我将探讨近期的经颅磁刺激（TMS）和功能磁共振成像（fMRI）研究，我认为这些研究表明了四个概念。进化过程扩大了人类的顶叶后皮质，同时仍保留了其他灵长类动物顶叶后皮质的内部结构。顶叶后皮质中的视觉运动控制可能主要通过对动作目标进行编码来实现。顶叶后皮质中视觉运动功能的偏侧化表明，左侧顶叶后皮质更关注工具使用，而右侧顶叶后皮质更关注对他人动作的模仿。最后，通过顶叶胼胝体纤维进行的视觉运动半球间传递发生在“运动意图”层面。
