The participants would type for 10 seconds, rest for 10 seconds, then repeat while the researchers monitored their neural activity.

参与者打10秒后休息10秒，之后重复这套动作，同时研究人员监视们的神经活动。

He became fascinated by how a smile works and analyzed every possible movement of each part of the face, working out the origins of every nerve that controls every facial muscle.

开始微笑是如何工作的，分析了脸部每个部位的每一个可能的动作，研究出控制每一块面部肌肉的每根神经的起源。

And identified 15 different facial movements, The researchers videotaped cats at 3 shelters to see how they responded to an approaching human They recorded facial expressions and body movements from 106 cats in all.

并确定了 15 种不同的面部动作，研究人员对 3 个收容所的猫进行了录像，以了解它们对接近的人的反应。们总共记录了 106 只猫的面部表情和身体动作。