Altered long-range alpha-band synchronization during visual short-term memory retention in children born very preterm

被引：35
作者：
Doesburg, Sam M. [1 ,2 ]
Ribary, Urs [1 ,2 ,3 ,4 ]
Herdman, Anthony T. [3 ]
Miller, Steven P. [1 ,2 ]
Poskitt, Kenneth J. [1 ,2 ]
Moiseev, Alexander [4 ]
Whitfield, Michael F. [1 ,2 ]
Synnes, Anne [1 ,2 ]
Grunau, Ruth E. [1 ,2 ]
机构：
[1] Univ British Columbia, Vancouver, BC V5Z 1M9, Canada
[2] Child & Family Res Inst, Vancouver, BC V6H 3V4, Canada
[3] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada
[4] Syndrome Res Fdn, Burnaby, BC, Canada
来源：
NEUROIMAGE | 2011年 / 54卷 / 03期
基金：
美国国家卫生研究院;
关键词：
Magnetoencephalography; Neural synchrony; Preterm child; Alpha oscillation; Neural networks; Functional connectivity; Developmental neuroimaging; Short-term memory; LOW-BIRTH-WEIGHT; WHITE-MATTER; FUNCTIONAL CONNECTIVITY; EXECUTIVE FUNCTION; PHASE SYNCHRONY; OSCILLATIONS; NETWORKS; EEG; AGE; INFANTS;
D O I：
10.1016/j.neuroimage.2010.10.044
中图分类号：
Q189 [神经科学];
学科分类号：
071006 ;
摘要：
Children born very preterm, even when intelligence is broadly normal, often experience selective difficulties in executive function and visual-spatial processing. Development of structural cortical connectivity is known to be altered in this group, and functional magnetic resonance imaging (fMRI) evidence indicates that very preterm children recruit different patterns of functional connectivity between cortical regions during cognition. Synchronization of neural oscillations across brain areas has been proposed as a mechanism for dynamically assigning functional coupling to support perceptual and cognitive processing, but little is known about what role oscillatory synchronization may play in the altered neurocognitive development of very preterm children. To investigate this, we recorded magnetoencephalographic (MEG) activity while 7-8 year old children born very preterm and age-matched full-term controls performed a visual short-term memory task. Very preterm children exhibited reduced long-range synchronization in the alpha-band during visual short-term memory retention, indicating that cortical alpha rhythms may play a critical role in altered patterns functional connectivity expressed by this population during cognitive and perceptual processing. Long-range alpha-band synchronization was also correlated with task performance and visual-perceptual ability within the very preterm group, indicating that altered alpha oscillatory mechanisms mediating transient functional integration between cortical regions may be relevant to selective problems in neurocognitive development in this vulnerable population at school age. (C) 2010 Elsevier Inc. All rights reserved.
引用
收藏
页码：2330 / 2339
页数：10
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