Sleep Diagram (IMAGE)

University of California - Santa Cruz

Sleep Diagram

Caption

Cetaceans (whales and dolphins) and otariids (fur seals and sea lions) keep one side of their brains awake while the other is asleep (unihemispheric sleep). In most other mammals, including phocids (true seals) and humans, both hemispheres of the brain are asleep at the same time.

Credit

Graphic by Jessica Kendall-Bar

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