In laboratories, healthy adult human brain neurons typically live no more than a few hours, making extensive research impossible.

在实验室里，健康的成年人大脑神经元的寿命通常不超过几个小时，因此不可能被广泛的研究。

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There are ongoing efforts by cognitive science laboratories and companies to develop cognitive assessment and brain training software that will function on mobile phones and tablets.

CNN: How mobile tech can influence our brain