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首页> 外文期刊>Nature >Primary motor cortex is involved in bimanual coordination.
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Primary motor cortex is involved in bimanual coordination.

机译：初级运动皮层参与双手协调。

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摘要

Many voluntary movements involve coordination between the limbs. However, there have been very few attempts to study the neuronal mechanisms that mediate this coordination. Here we have studied the activity of cortical neurons while monkeys performed tasks that required coordination between the two arms. We found that most neurons in the primary motor cortex (MI) show activity specific to bimanual movements (bimanual-related activity), which is strikingly different from the activity of the same neurons during unimanual movements. Moreover, units in the supplementary motor area (SMA; the area of cortex most often associated with bimanual coordination) showed no more bimanual-related activity than units in MI. Our results challenge the classic view that MI controls the contralateral (opposite) side of the body and that SMA is responsible for the coordination of the arms. Rather, our data suggest that both cortical areas share the control of bilateral coordination.
机译：许多自愿运动涉及四肢之间的协调。但是，几乎没有尝试研究介导这种协调的神经元机制。在这里，我们研究了皮质神经元的活动，而猴子则执行了需要两臂协调的任务。我们发现，初级运动皮层（MI）中的大多数神经元表现出特定于双向运动的活动（与双向相关的活动），这与单向运动期间相同神经元的活动显着不同。此外，补充运动区域（SMA；最常与双手协调相关的皮层区域）中的单位显示出与MI相关单位相比，与双手相关的活动不多。我们的结果挑战了经典观点，即MI控制身体的对侧（相对）侧，而SMA负责手臂的协调。而是，我们的数据表明，两个皮质区域共享双边协调的控制。

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