That was done by having them catch Z's while wearing a special skull-cap that had devices for measuring eye motions, head motions, and brain waves.
并且，让他们戴上特制的无沿便帽，帽子里的装置用来测量他们眼球的活动，头部的活动以及脑电波。
"No, I was trying to see if I could create the 'Living Dead,'" he says, while making zombie motions with his head and hands.
“没有，我想看看我能不能创造一个‘活死人’，”他一边说，一边用他的头和手扮僵尸状。
The inner ears sense motions of the head; the eyes see where the head is; and tiny sensory organs in muscles and tendons sense where the rest of the body is.
内耳感受头部的运动方向，眼睛分辨头部的活动走向，而肌肉和肌腱中的微小感受器能够感觉到身体其他部位的移动。
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