In fact, various emotional states give rise to certain patterns of electrical activity in the facial muscles and in the brain.

事实上，不同的情绪状态会在面部肌肉和大脑中产生特定的脑电活动模式。

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The same genes that give sharks their sixth sense and allow them to detect electrical signals are also responsible for the development of head and facial features in humans, a new study suggests.

美国科学家的一项最新研究显示，使鲨鱼具有第六感并让它们能够检测电流信号的基因对人类头部和面部特征的发育也起著重要作用。

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Well it was a French doctor in the 1860s who went to the trouble of stimulating facial muscles with electrical currents to discover what reveals a genuine smile.

1860年代有一个法国医生通过电流刺激面部肌肉的方法去寻找真心微笑的关键。

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They categorised facial dimensions such as the distance between the eyes, then recorded the electrical activity of one brain cell at a time while they showed cartoons to the macaques.

ECONOMIST: Facial characteristics