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A typical hypnogram, delineating the sleep architecture for a (human) mammal looks like

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A distinct distribution of non-REM and REM sleep can be observed.

Is this pattern of sleep cycles particular to that of diurnal mammals, and if so, how would the sleep architecture of a mammal that sleeps during the daytime be different?

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I looked for research on this, interestingly I couldn't find any scientific articles looking at sleep-wake cycles in nocturnal creatures. Fascinating question, but based on the lack of research available I doubt the answer is available at present. Although I hope I am wrong. – Comte Mar 3 at 14:32

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