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Octopuses have two major alternating sleep states – and can even have dreams

Publicado em 28 março 2021
Octopuses are known to sleep and change color while they do so. Now, a study published on March 25, 2021 in the journal iScience finds that these color changes are characteristic of two major alternating sleep states: an “active sleep” stage and a “quiet sleep” stage. Researchers say the findings have implications for how sleep evolves and could indicate it’s possible for octopuses to experience something that looks like dreams.   Scientists believed that [...]