Unraveling why we sleep: Quantitative analysis reveals abrupt transition from neural reorganization to repair in early development.
Unraveling why we sleep: Quantitative analysis reveals abrupt transition from neural reorganization to repair in early development.
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DOI:
10.1126/sciadv.aba0398
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发表时间:
2020-09
期刊:
影响因子:
13.6
通讯作者:
Savage VM
中科院分区:
文献类型:
--
作者:
Cao J;Herman AB;West GB;Poe G;Savage VM
Discovery of how sleep function shifts from neural reorganization to repair by combining mathematical theory and data analysis. Sleep serves disparate functions, most notably neural repair, metabolite clearance and circuit reorganization. Yet the relative importance remains hotly debated. Here, we create a novel mechanistic framework for understanding and predicting how sleep changes during ontogeny and across phylogeny. We use this theory to quantitatively distinguish between sleep used for neural reorganization versus repair. Our findings reveal an abrupt transition, between 2 and 3 years of age in humans. Specifically, our results show that differences in sleep across phylogeny and during late ontogeny (after 2 or 3 years in humans) are primarily due to sleep functioning for repair or clearance, while changes in sleep during early ontogeny (before 2 or 3 years) primarily support neural reorganization and learning. Moreover, our analysis shows that neuroplastic reorganization occurs primarily in REM sleep but not in NREM. This developmental transition suggests a complex interplay between developmental and evolutionary constraints on sleep.
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发表时间:
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通讯作者:
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