Lacquaniti F
Trends Neurosci. 1989 Aug;12(8):287-91. doi: 10.1016/0166-2236(89)90008-8.
In order to move, we must know 'where' to go and 'how' to get there. Since limb movement unfolds simultaneously in the space extrinsic to the subject ('where' to go) and in the intrinsic space of the joints and muscles ('how' to go), the brain must be able to represent the movement in both spaces and to map information from one space to the other. Here Francesco Lacquaniti reviews the experimental evidence in support of the hypothesis that these central representations consist of a limited, well-defined ensemble of movement properties, which are coded in specific coordinate systems. The discussion will be focused on drawing and handwriting movements, because much progress has recently been made in understanding them. However, most of the concepts apply to other arm movements as well.
为了实现移动，我们必须知道要“去往何处”以及“如何到达那里”。由于肢体运动在主体外部空间（“去往何处”）和关节与肌肉的内在空间（“如何移动”）中同时展开，大脑必须能够在这两个空间中表征运动，并将信息从一个空间映射到另一个空间。在这里，弗朗切斯科·拉克奎尼蒂回顾了支持以下假设的实验证据：这些中枢表征由一组有限的、定义明确的运动属性组成，这些属性在特定的坐标系中编码。讨论将集中在绘图和书写运动上，因为最近在理解它们方面取得了很大进展。然而，大多数概念也适用于其他手臂运动。
