Tuesday, November 29, 2022

Sweet dreams, Spidey: Arachnids experience REM sleep, and can dream

Imagine a spider hanging from a silky thread, as if in a still corpse, until its eight legs trembled unexpectedly. While it may sound like a horror movie, it’s actually a nocturnal experience for the jumping spiders (avercha arcuate) who can reach rapid eye movement (REM) sleep, the stage in which most dreams occur, a new study finds.

in the study, published August 8 in the journal Proceedings of the National Academy of Science (opens in new tab)In this study, researchers used cameras to examine the jumping spiders while they were sleeping, observing the arachnids’ eye and body movements throughout the night. The twitching movements the team found when the spiders snoozed were similar to those observed in humans and other mammals. like dogsas well as nonvenomous reptiles and cephalopods during REM sleep.

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