Wake-like skin patterning and neural activity during octopus sleep | Nature

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. Advertisement Nature volume  619,  pages 129–134 (2023)Cite this article 29k Accesses 7 Citations 1318 Altmetric Metrics details While sleeping, many vertebrate groups alternate between at least two sleep stages: rapid eye movement and slow wave sleep1,2,3,4, in part characterized by wake-like and synchronous brain activity, respectively. Here we delineate neural and behavioural correlates of two stages of sleep in octopuses, marine invertebrates that evolutionarily diverged from vertebrates roughly 550 million years ago (ref. 5) and have independently evolved large brains and behavioural sophistication. ‘Quiet’ sleep in

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