A motor unit is a group of muscle fibers that all get their signals from the same, single motor neuron.

运动单元是一组肌肉纤维，它们都从同一个运动神经元接收信号。

But other muscles — like the ones that control your eyes and fingers, which exert fine motor control — may have just a handful of muscle fibers connected to a single motor neuron.

但是其他肌肉——比如控制眼睛和手指的肌肉，它们施加精细运动控制——可能只有少数肌肉纤维连接到一个运动神经元。

So we get to arrange occupational focus groups with our amputee volunteers in order to identify which gestures they will use the most, and of those, how many we could perform using just a single motor.

因此，我们将截肢志愿者们安排组成了职业焦点小组，以确定他们最常使用哪些手势，以及这些手势中，我们如果只用一个电机，可以执行多少个。