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كشفت دراسة جديدة أن قناديل البحر وشقائق النعمان البحرية تنام رغم عدم امتلاكها دماغا، ويساعد النوم هذه الحيوانات على إصلاح تلف الحمض النووي وحماية خلاياها العصبية.
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A new study from Bar-Ilan University shows that one of sleep's core functions originated hundreds of millions of years ago in jellyfish and sea anemones, among the earliest creatures with nervous systems. By tracing this mechanism back to these ancient animals, the research demonstrates that protecting neurons from DNA damage and cellular stress is a basic, ancient function of sleep that began long before complex brains evolved.