哺乳动物中调节昼夜节律的是两个调节神经细胞群，称为视交叉上核中的下丘脑。

The circadian rhythm in mammals is regulated by two clusters of nerve cells called the suprachiasmatic nuclei (SCN) in the anterior hypothalamus.

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刺激哺乳动物的外侧下丘脑会让他们陷入一种循环，Panksepp写道，“每次刺激都唤起新的搜索策略。”(Panksepp没有提到Bing)。

Mammals stimulating the lateral hypothalamus seem to be caught in a loop, Panksepp writes, "where each stimulation evoked a reinvigorated search strategy" (and Panksepp wasn't referring to Bing).

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哺乳动物下丘脑的视交叉上核(scn)控制着多种生理节奏的发生。

The suprachiasmatic nucleus (SCN) in the hypothalamus controls many aspects of circadian rhythms in mammalian animals.

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