德国波恩大学的研究人员近日在《美国国家科学院院刊》（PNAS）上发表了一项研究，首次通过实验证实澳大利亚跳蛛（Portia fimbriata）拥有调节性的两阶段睡眠模式 1。这项于2026年10月27日报道的成果显示，这种成年体型仅相当于一枚一欧元硬币大小的蜘蛛，其睡眠状态中存在类似人类快速眼动（REM）的阶段，具体表现为眼球运动和肌肉抽搐 1。
为了确认这一现象，科研团队采用了红外摄像机记录行为、施加声音刺激以测试反应速度，并观察睡眠剥夺后出现的“睡眠反弹”效应进行多重验证 1。尽管该研究揭示了不同神经系统动物睡眠进化的重要线索，但受限于无法直接测量蜘蛛的大脑活动，科学家目前仅依赖行为观察，因此尚未确定这些生理表现是否意味着蜘蛛真的会做梦 1。
针对未来的研究方向，团队计划将调查范围扩展至其他蜘蛛物种及自然环境下的对比分析，同时考察气候变化和夜间人工照明对这类生物睡眠机制的具体影响 1。
Scientists at the University of Bonn have experimentally confirmed that the Australian jumping spider Portia fimbriata exhibits a regulated two-stage sleep pattern, marking a significant step in understanding sleep evolution across different nervous systems. 1 The study, published in the Proceedings of the National Academy of Sciences (PNAS) on October 27, 2026, reveals that these spiders, which are roughly the size of a one-euro coin as adults, cycle through distinct sleep phases during rest. 1 One of these phases features behaviors analogous to human Rapid Eye Movement (REM) sleep, characterized by eye movements and muscle twitches. 1
To validate their findings, researchers employed infrared cameras to monitor behavior and tested response speeds using sound stimuli, further confirming the sleep state through the observation of "sleep rebound" after deprivation experiments. 1 Despite these clear behavioral indicators, the team noted a critical limitation: they could not measure brain activity directly and relied solely on external observations. 1 Consequently, while the presence of REM-like stages suggests complex neural processing, it remains unproven whether spiders actually dream. 1 Future research aims to expand this investigation to other spider species and natural environments, as well as to assess how climate change and artificial light at night (ALAN) impact arachnid sleep cycles. 1
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