NATURE OF HUMAN INTER-LIMB COORDINATION
NATURE OF HUMAN INTER-LIMB COORDINATION
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DOI：
10.1126/science.424729
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发表时间：
1979-01-01
期刊：
影响因子：
56.9
通讯作者：
GOODMAN, D
中科院分区：
文献类型：
--
作者：
KELSO, JAS;SOUTHARD, DL;GOODMAN, D
根据菲茨定律，运动时间随幅度和对精度的要求而变化，但当受试者对难度相差很大的目标进行双手运动时，他们会同时进行。向容易的目标移动的手移动得更慢，以适应困难的目标，但两只手同时达到峰值速度和加速度。大脑显然不是通过独立控制每一条肢体来产生动作的同时性，而是通过组织肌肉的功能分组，这些肌肉被限制为一个单一的单元。
Movement time varies as a function of amplitude and requirements for precision, according to Fitts'' law, but when subjects perform 2-handed movements to targets of widely disparate difficulty they do so simultaneously. The hand moving to an easy target moves more slowly to accommodate its difficult counterpart, yet both hands reach peak velocity and acceleration synchronously. The brain apparently produces simultaneity of action not by controlling each limb independently, but by organizing functional groupings of muscles that are constrained to act as a single unit.