一项研究发现,Jellyfish和海葵尽管没有大脑,但表现出像睡眠一样的状态,保护神经健康。 Jellyfish and sea anemones, despite having no brains, exhibit sleep-like states that protect neural health, a study finds.

Jellyfish和海葵尽管缺乏大脑, 却表现出像睡眠一样的行为模式与人类相似, Jellyfish and sea anemones, despite lacking brains, display sleep-like behavior with patterns similar to humans, according to a study in Nature Communications. 翻身水母Cassiopea andromeda每天睡8个小时, 大多是晚上午睡, 而小星海Nematostella vectensis则大约一天的三分之一时间睡觉, 主要是在黎明时分. The upside-down jellyfish Cassiopea andromeda sleeps about eight hours daily, mostly at night with a midday nap, while the starlet sea anemone Nematostella vectensis sleeps roughly one-third of the day, mainly at dawn. 研究人员观察到,睡眠期间行动减少,反应缓慢,睡眠被剥夺导致补偿性休息。 Researchers observed reduced movement and slower responses during sleep, with sleep deprivation leading to compensatory rest. 神经元中的DNA损伤在觉醒期间增加,睡眠期间减少,这表明睡眠的核心功能是保护神经健康。 DNA damage in neurons increased during wakefulness and decreased during sleep, suggesting sleep’s core function is protecting neural health. 这些研究结果支持这样的理论,即睡眠早期演变以保持细胞完整性,即使在没有复杂神经系统的动物中也是如此。 These findings support the theory that sleep evolved early to maintain cellular integrity, even in animals without complex nervous systems.