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Study of brainless hydra suggests sleep evolved before the central nervous system

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Norway to restrict primary school pupils’ use of AI due to declining school results

5d ago· 2 min readenNews

Summary

Researchers from Kyushu University studied Hydra vulgaris, a cnidarian without a central nervous system, to investigate the evolutionary origin of sleep. They found strong evidence that sleep behavior predates the evolution of brains, suggesting the need for sleep arose earlier than previously thought in evolutionary history.

Source

Twitter / XStudy of brainless hydra suggests sleep evolved before the central nervous systemuniversal-sci.com

Key quotes

· 1 pulled
According to Taichi Q. Itoh, one of the researchers, there is now strong evidence that the need for sleep came before the acquisition of an actual brain.
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Scientists have investigated the origin of sleep in animals and made some interesting discoveries

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