First, the team must determine exactly how the time-stamping work and its effects on the brain and memory.

首先，研究小组必须精确地知道时间如何标记以及其对大脑和记忆的影响。

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Certain parts shrink, especially areas in the brain that are important to learning, memory and planning.

某些部分会萎缩，尤其是大脑中那些对学习、记忆和计划十分重要的区域。

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Researchers have established that when people are mentally engaged, biochemical changes occur in the brain that allow it to act more effectively in cognitive areas such as attention and memory.

研究人员已经证实，当人们动脑筋时，大脑中会发生生化变化，使其在注意力和记忆等认知区域更有效地发挥作用。

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They are meant to treat memory, thinking,language,judgment and other brain activity.

VOA: special.2009.09.15

It attacks the brain's nerve cells, robs memory and impairs thinking and language skills.

VOA: standard.2009.12.04

She added this could specifically help medical and military training and further research could be carried out to see if sleep loss affected other brain and memory functions in a similar way.

BBC: Spatial memory works in a similar way in rats and humans

This work shows that sleep trains the brain and promotes memory reorganisation from the hippocampus to the striatum, meaning that navigation becomes more automatic.

BBC: Time spent in bed could make you a better gamer

Some 60% of 2, 000 students questioned by OnePoll for penmakers Bic said they changed their diet before exams because they believe some foods can boost their brain power and memory.

BBC: One in three students wears 'lucky exam underwear'