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首页> 外文期刊>Journal of Neurophysiology >Spatiotemporal distribution of location and object effects in the electromyographic activity of upper extremity muscles during reach-to-grasp
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Spatiotemporal distribution of location and object effects in the electromyographic activity of upper extremity muscles during reach-to-grasp

机译：到达和抓住期间上肢肌肉的肌电活动中位置和对象效应的时空分布

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Rouse AG, Schieber MH. Spatiotemporal distribution of location and object effects in the electromyographic activity of upper extremity muscles during reach-to-grasp. J Neurophysiol 115: 3238-3248, 2016. First published March 23, 2016; doi:10.1152/jn.00008.2016.—In reaching to grasp an object, proximal muscles that act on the shoulder and elbow classically have been viewed as transporting the hand to the intended location, while distal muscles that act on the fingers simultaneously shape the hand to grasp the object. Prior studies of electromyographic (EMG) activity in upper extremity muscles therefore have focused, by and large, either on proximal muscle activity during reaching to different locations or on distal muscle activity as the subject grasps various objects. Here, we examined the EMG activity of muscles from the shoulder to the hand, as monkeys reached and grasped in a task that dissociated location and object. We quantified the extent to which variation in the EMG activity of each muscle depended on location, on object, and on their interaction—all as a function of time
机译：Rouse AG，Schieber MH。到达和抓住期间上肢肌肉的肌电图活动中位置和对象效应的时空分布。 J Neurophysiol 115：3238-3248，2016。2016年3月23日首次出版; doi：10.1152 / jn.00008.2016.—在抓住物体时，通常作用于肩膀和肘部的近端肌肉被视为将手移至预定位置，而作用于手指的远端肌肉同时使手部成形抓住物体。因此，先前对上肢肌肉的肌电图（EMG）活性的研究大体上集中在到达不同位置时的近端肌肉活动或对象抓住各种物体时的远端肌肉活动。在这里，我们检查了猴子从肩膀到手的肌肉EMG活动，因为猴子伸手抓住了这个任务，将位置和物体分离了。我们量化了每只肌肉的EMG活动变化取决于位置，物体及其相互作用的程度，这些变化均随时间而变。

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