（特拉维夫13日综合电）水母和海葵这些原始动物虽无大脑、仅有简单的神经网络，可是同样表现出规律的睡眠行为。
一项最新研究发现，它们每天约8小时的“睡眠”，并非偶然，或具有重要的进化意义。它们的睡眠可能是为了保护神经元而进化出来的，能修复动物清醒时积累的神经元中脱氧核糖核酸（DNA）损伤。
以色列巴尔伊兰大学在内的机构研究人员日前在英国《自然-通讯》杂志发表论文说，他们分析了倒立水母和星状海葵的情况，这两种较简单的动物拥有原始的神经系统，神经元呈网络分布，不存在中枢神经。研究人员将它们行为静止、保持特有姿势、不易受外界刺激影响的状态视为睡眠。
研究结果显示，无论在实验室环境还是自然栖息地，倒立水母都主要在夜间进入睡眠状态，并在中午进行短暂小睡，每天的睡眠时间约8小时，睡眠模式会受到环境光暗变化的影响。相比之下，星状海葵的睡眠则主要集中在黎明前后，每天同样需要约8小时睡眠，且更明显受自身生物钟调控。
会员独享好文 减少强制广告 即时派送好康 独家社群交流
SQL: Array
(
[0] => Array
(
[query] => SELECT * FROM "wp_posts" WHERE "wp_posts"."ID" = :MeD0_mK AND "wp_posts"."post_status" = :MeD1_mK LIMIT 1
[params] =>
[time_ms] => 0.669956
)
[1] => Array
(
[query] => SELECT "meta_key","meta_value" FROM "wp_postmeta" WHERE "post_id" = :MeD2_mK
[params] =>
[time_ms] => 0.608921
)
)
Redis: Array
(
[0] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:4763632
[2] => info
)
[time_ms] => 0.25
)
[1] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => category_info:all
[2] => info
)
[time_ms] => 0.64
)
[2] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HSET
[1] => lockedcontent_info:4763632
[2] => info
[3] => {"locked_content":"\n\n\n\n分析还表明，两种动物的神经元DNA损伤总是在清醒时增加、睡眠时减少。<\/p>\n\n\n\n
研究人员用紫外线诱发DNA损伤，发现这些动物会通过增加睡眠时间来应对，说明它们通过睡眠来提供专门的时间窗口。<\/p>\n\n\n\n\n![\"\"](\"https:\/\/www.chinapress.com.my\/wp-content\/uploads\/2026\/01\/Jellyfish-sleep-260113-1.1-600x314.jpg\")
研究显示，无脑水母亦需睡8小时。科学家说，睡眠或为修复神经元DNA损伤。<\/figcaption><\/figure>\n<\/figure>\n\n\n\n研究人员说，上述结论仍需更多实验加以验证。例如可在紫外线诱发DNA损伤后刻意阻止动物进入睡眠状态，以观察生理后果。<\/p>\n\n\n\n
此外，睡眠在进化过程中形成，或还受到其他重要因素的驱动，例如在记忆形成与整合过程中降低能量消耗。<\/p>\n\n\n\n
文：综合报导
图：互联网<\/p>\n<\/html>\n<\/p>"}
)
[time_ms] => 0.25
)
[3] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => ZRANGE
[1] => termlist17792
[2] => 0
[3] => 7
)
[time_ms] => 0.24
)
[4] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:5073647
[2] => info
)
[time_ms] => 0.22
)
[5] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:5047383
[2] => info
)
[time_ms] => 0.23
)
[6] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:4800997
[2] => info
)
[time_ms] => 0.24
)
[7] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:4771167
[2] => info
)
[time_ms] => 0.21
)
[8] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:4684588
[2] => info
)
[time_ms] => 0.22
)
[9] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:4684159
[2] => info
)
[time_ms] => 0.19
)
[10] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:4680830
[2] => info
)
[time_ms] => 0.2
)
[11] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => ZRANGE
[1] => termlist42764
[2] => 0
[3] => 7
)
[time_ms] => 0.21
)
[12] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:5065674
[2] => info
)
[time_ms] => 0.2
)
[13] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:5069461
[2] => info
)
[time_ms] => 0.22
)
[14] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:5073379
[2] => info
)
[time_ms] => 0.26
)
[15] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:5073396
[2] => info
)
[time_ms] => 0.43
)
[16] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:5074136
[2] => info
)
[time_ms] => 0.27
)
[17] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:5074285
[2] => info
)
[time_ms] => 0.24
)
[18] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:5074445
[2] => info
)
[time_ms] => 0.24
)
[19] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => ZRANGE
[1] => termlist48104
[2] => 0
[3] => 7
)
[time_ms] => 0.22
)
[20] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:5036651
[2] => info
)
[time_ms] => 0.26
)
[21] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:5005350
[2] => info
)
[time_ms] => 0.24
)
[22] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:4974628
[2] => info
)
[time_ms] => 0.25
)
[23] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:4962187
[2] => info
)
[time_ms] => 0.23
)
[24] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:4962754
[2] => info
)
[time_ms] => 0.22
)
[25] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:4953633
[2] => info
)
[time_ms] => 1.61
)
[26] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:4949564
[2] => info
)
[time_ms] => 0.23
)
[27] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => ZRANGE
[1] => termlist84777
[2] => 0
[3] => 7
)
[time_ms] => 0.21
)
[28] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:5065674
[2] => info
)
[time_ms] => 0.22
)
[29] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:5069461
[2] => info
)
[time_ms] => 0.84
)
[30] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:5074136
[2] => info
)
[time_ms] => 0.23
)
[31] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:5074285
[2] => info
)
[time_ms] => 0.24
)
[32] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:5074445
[2] => info
)
[time_ms] => 0.24
)
[33] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:5074442
[2] => info
)
[time_ms] => 0.21
)
[34] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => HGET
[1] => post_info:5074594
[2] => info
)
[time_ms] => 0.2
)
[35] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => ZRANGE
[1] => termlist293387
[2] => 0
[3] => 7
)
[time_ms] => 0.2
)
[36] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => ZRANGE
[1] => termlist293388
[2] => 0
[3] => 7
)
[time_ms] => 0.18
)
[37] => Array
(
[command] => RAW
[arguments] => Array
(
[0] => ZRANGE
[1] => termlist293389
[2] => 0
[3] => 7
)
[time_ms] => 0.16
)
)
