人类早产儿 EEG 爆发中的长程时间相关性。
Long-range temporal correlations in the EEG bursts of human preterm babies.
机构信息
Centre for Mathematics and Physics in the Life Sciences and Experimental Biology, University College London, London, United Kingdom.
出版信息
PLoS One. 2012;7(2):e31543. doi: 10.1371/journal.pone.0031543. Epub 2012 Feb 21.
Abstract
The electrical activity in the very early human preterm brain, as recorded by scalp EEG, is mostly discontinuous and has bursts of high-frequency oscillatory activity nested within slow-wave depolarisations of high amplitude. The temporal organisation of the occurrence of these EEG bursts has not been previously investigated. We analysed the distribution of the EEG bursts in 11 very preterm (23-30 weeks gestational age) human babies through two estimates of the Hurst exponent. We found long-range temporal correlations (LRTCs) in the occurrence of these EEG bursts demonstrating that even in the very immature human brain, when the cerebral cortical structure is far from fully developed, there is non-trivial temporal structuring of electrical activity.
摘要
头皮 EEG 记录的极早期人类早产儿大脑的电活动大多是不连续的，具有高频振荡活动的爆发，嵌套在高振幅的慢波去极化中。这些 EEG 爆发的发生的时间组织以前没有被研究过。我们通过两种赫斯特指数的估计分析了 11 名非常早产儿（23-30 周胎龄）婴儿的 EEG 爆发的分布。我们发现这些 EEG 爆发的发生存在长程时间相关性（LRTC），这表明即使在大脑皮质结构远未完全发育的非常不成熟的人类大脑中，电活动也存在非平凡的时间结构。
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