先前的研究已经发现在海马体中，存在于年龄相关变化的基因表达，海马体是大脑中的记忆中枢。
Previous studies had found age-related changes in gene expression in the hippocampus, a crucial memory center in the brain.
《细胞》杂志上刊登的一项研究表明，大脑记忆中枢的新生神经元将原来的记忆挪出去，然后把新记忆放到腾出来的空间里。
Because according to a studypublished in the journal Cell, newborn neurons in the brain's memory center make room for new memories by moving out the old ones.
但是它并不能将这种记忆转化为行为，因为没有有了中枢海马体，也就失去了与行为控制的相关的链接。
However, it cannot translate this memory into behaviour because without the intermediate hippocampus, it lacks the relevant links to behavioural control.
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