During sleep, the brain reactivates patterns of neural activity that it performed during the day, thus strengthening the memories by long-termpotentiation.
睡眠时，大脑激活白天活动的神经活动形态，因此通过长期势差过程巩固记忆。
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The researchers also looked at a molecular correlate of memory called long-termpotentiation, or LTP, a mechanism that strengthens connections between neurons.
PubMed abstract: Long-termpotentiation (LTP) is an enhancement of synaptic strength that can be produced by pairing of presynaptic activity with postsynaptic depolarization.