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Other Sciences
Biology and Medical
Distinction between circadian cycles and sleep?
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[QUOTE="Aidyan, post: 6504275, member: 355186"] But the statement that "Circadian cycles in living things are supposed to have existed before sleep" automatically implies that circadian cycles and sleep are two very different processes that one should distinguish. What distinguishes it? If there is no distinction, i.e. circadian cycle=sleep, then the assumption that "sleep requires a primitive central nervous system" makes no sense: it is a well known fact that already single cells undergo a circadian cycles. [/QUOTE]
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Distinction between circadian cycles and sleep?
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