Jones K E, Bawa P, McMillan A S
School of Kinesiology, Simon Fraser University, Burnaby, BC, Canada.
Brain Res. 1993 Feb 5;602(2):354-6. doi: 10.1016/0006-8993(93)90702-o.
In 1949, Denny-Brown reported that the motoneuron pool of the human flexor carpi ulnaris (FCU) muscle was fractionated into subpopulations, each subpopulation being activated during a different voluntary motor task. The following report presents data on motor unit recruitment in the human FCU muscle for the tasks of isometric flexion and ulnar deviation, cocontraction of the forearm muscles and non-isometric flexion of the wrist. These observations show that every FCU motor unit tested reliably, contributed to all four tasks, that is, no separate subpopulations were observed for any of the contractions tested. Furthermore, the order of recruitment was the same for all four tasks.
1949年，丹尼-布朗报告称，人类尺侧腕屈肌（FCU）的运动神经元池被分成了不同的亚群，每个亚群在不同的自主运动任务中被激活。以下报告展示了人类FCU肌肉在等长屈曲和尺侧偏斜、前臂肌肉共同收缩以及腕部非等长屈曲任务中的运动单位募集数据。这些观察结果表明，所测试的每个FCU运动单位都可靠地参与了所有四项任务，也就是说，在所测试的任何收缩中都未观察到单独的亚群。此外，所有四项任务的募集顺序都是相同的。
