不过，有时基因的突变会导致细胞不正常活动。

However, sometimes a mutation in a gene will cause cells to act in an unusual way.

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钾离子通道基因是该团队发现的第二个引起不正常电活动，从而导致癫痫死亡的基因。

This potassium ion channel gene is the second such gene found by the group to cause abnormal electrical activity leading to death in epilepsy.

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研究人员发现，患有自闭症的儿童大脑左颞叶皮层活动力非常低，表现极为不正常。

The researchers found abnormally low activity in the left temporal cortex of the brains of the children with autism.

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Because it was in the 1950's or so, maybe the late 1940's, that people started to discover lithium, even though it had no natural function, it did do something in our bodies.

因为在二十世纪五十年代左右，可能是四十年代末期，人们开始发现锂，尽管不参与人体的正常生理活动，但是它确实会对我们的身体产生影响。

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