Learning happens in the hippocampus, a brain region that plays a key role in acquiring memories.

学习发生在脑部的海马状突起中，这是获取记忆最关键的脑部区域。

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Stress takes a toll on the brain by washing harmful chemicals over the hippocampus and other brain areas involved in memory.

紧张会通过使头脑里的海马体以及与记忆有关的头脑其他区域受到有害化学物质的冲蚀而产生负面的影响。

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Tissue, Cytoplasmic Protein, Human Disease, Alzheimer's Disease, Brain, Hippocampus.

组织，细胞质蛋白，病人，老年性痴呆，脑，海马。

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"We also looked at the part of the brain called the hippocampus which is very important for forming the sort of memories we make everyday,you know, when you have to remember a pin number or you have to remember how to get somewhere, and the hippocampus, if it's a good size that means you are less likely to develop Alzheimer's,"

VOA: standard.2009.12.30

The researchers concentrated on two areas of the brain, the hippocampus and the frontal cortex, areas where plaque formation occurs in humans.

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Researchers at Stanford University and MIT's Picower Institute for Learning and Memory had activated light-sensitive neurons in the brain's hippocampus involved in the memory of fright.

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Dr. James Stone, who authored the research, says that the signaling between these two types of neurotransmitter is happening between a part of the brain called the hippocampus and another called the striatum.

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