你给时钟设定了你想要醒来的最晚时间，然后它会在之前的浅睡眠阶段按时叫醒你。

You program the clock with the latest time at which you want to be wakened, and it then duly wakes you during the last light sleep phase before that.

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当感觉细胞在一个周期的“睡眠”时段不会激活时钟细胞，因此感觉细胞很容易与加压素释放细胞进行通信。

When they did not activate the clock cells during the 'sleep' part of their cycle, it was easier for the sensory cells to communicate with vasopressin-releasing cells.

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因此加压素水平在睡眠时升高，同时，时钟神经细胞变得更安静。

Vasopressin levels increase during sleep; clock neurons, meanwhile, get quieter.

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