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Altered characteristic of brain networks in mild cognitive impairment during a selective attention task: An EEG study

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收录情况： ◇ SCIE

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机构： [a]School of Communication and Information Engineering, Shanghai University, Shanghai, PR China [b]Department of Electrical & Computer Engineering, Purdue University Calumet, Hammond, IN, United States [c]Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, PR China

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关键词： Mild cognitive impairment EEG Small-world network Complex network analysis Phase synchronization Time-evolution

摘要：

The present study evaluated the topological properties of whole brain networks using graph theoretical concepts and investigated the time-evolution characteristic of brain network in mild cognitive impairment patients during a selective attention task. Electroencephalography (EEG) activities were recorded in 10 MCI patients and 17 healthy subjects when they performed a color match task. We calculated the phase synchrony index between each possible pairs of EEG channels in alpha and beta frequency bands and analyzed the local interconnectedness, overall connectedness and small-world characteristic of brain network in different degree for two groups. Relative to healthy normal controls, the properties of cortical networks in MCI patients tend to be a shift of randomization. Lower sigma of MCI had suggested that patients had a further loss of small-world attribute both during active and resting states. Our results provide evidence for the functional disconnection of brain regions in MCI. Furthermore, we found the properties of cortical networks could reflect the processing of conflict information in the selective attention task. The human brain tends to be a more regular and efficient neural architecture in the late stage of information processing. In addition, the processing of conflict information needs stronger information integration and transfer between cortical areas. (C) 2015 Elsevier B.V. All rights reserved.

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出版当年[2014]版：

大类 | 3 区医学

小类 | 3 区生理学 3 区心理学 4 区神经科学

最新[2025]版：

大类 | 3 区心理学

小类 | 3 区神经科学 3 区生理学 3 区心理学 3 区心理学：生物 4 区心理学：实验

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出版当年[2013]版：

Q2 PHYSIOLOGY Q2 PSYCHOLOGY, EXPERIMENTAL Q2 PSYCHOLOGY Q2 PSYCHOLOGY, BIOLOGICAL Q3 NEUROSCIENCES

最新[2023]版：

Q2 PHYSIOLOGY Q2 PSYCHOLOGY Q2 PSYCHOLOGY, BIOLOGICAL Q2 PSYCHOLOGY, EXPERIMENTAL Q3 NEUROSCIENCES

影响因子： 2.5 最新[2023版] 2.9 最新五年平均 2.648 出版当年[2013版] 2.96 出版当年五年平均 2.036 出版前一年[2012版] 2.882 出版后一年[2014版]

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第一作者机构： [a]School of Communication and Information Engineering, Shanghai University, Shanghai, PR China

通讯作者：

通讯机构： [*1]P.O. Box 98, 99, Shangda Road, Baoshan District, Shanghai University, Shanghai 200444, PR China.

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