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Considering REM sleep-like stages among the traits defining cognitively complex lineages

Published online by Cambridge University Press:  03 November 2025

Andrea Becchetti*
Affiliation:
Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milano, Italy andrea.becchetti@unimib.it
*
*Corresponding author.

Abstract

Sleep stages resembling the REM and non-REM (NREM) phases observed in mammals and birds were recently found in other vertebrates, cephalopods, and euarthropods. REM sleep-like stages could mark a leap in cognitive evolution, by regulating the visuomotor elaboration that Coombs and Trestman deem essential for the cognitively complex lineages. The more widespread NREM sleep-like stages likely modulate metabolism and homeostasis of synaptic circuits.

Information

Type
Open Peer Commentary
Copyright
© The Author(s), 2025. Published by Cambridge University Press

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