In 12 of the 15, the cells in the motor cortex adjacent to the cell phone showed excitability during phone use but returned to normal within an hour.

结果发现，15人中有12个人在通话时其接近手机的大脑皮层内的细胞处于活跃状态，一个小时之内又恢复了正常。

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The problems include higher than normal levels of excitability, aggression and depression.

VOA: special.2009.01.13