Effects of Mental Fatigue on Small-World Brain Functional Network Organization
Joint Authors
Jiao, Weidong
Li, Gang
Luo, Youdong
Zhang, Zhengru
Xu, Yanting
Jiang, Yonghua
Huang, Shan
Wang, Chengwu
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-12-06
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Brain functional network has been widely applied to investigate brain function changes among different conditions and proved to be a small-world-like network.
But seldom researches explore the effects of mental fatigue on the small-world brain functional network organization.
In the present study, 20 healthy individuals were included to do a consecutive mental arithmetic task to induce mental fatigue, and scalp electroencephalogram (EEG) signals were recorded before and after the task.
Correlations between all pairs of EEG channels were determined by mutual information (MI).
The resulting adjacency matrices were converted into brain functional networks by applying a threshold, and then, the clustering coefficient (C), characteristic path length (L), and corresponding small-world feature were calculated.
Through performing analysis of variance (ANOVA) on the mean MI for every EEG rhythm, only the data of α1 rhythm during the task state were emerged for the further explorations of mental fatigue.
For a wide range of thresholds, C increased and L and small-world feature decreased with the deepening mental fatigue.
The pattern of the small-world characteristic still existed when computed with a constant degree.
Our present findings indicated that more functional connectivities were activated at the mental fatigue stage for efficient information transmission and processing, and mental fatigue can be characterized by a reduced small-world network characteristic.
Our results provide a new perspective to understand the neural mechanisms of mental fatigue based on complex network theories.
American Psychological Association (APA)
Li, Gang& Luo, Youdong& Zhang, Zhengru& Xu, Yanting& Jiao, Weidong& Jiang, Yonghua…[et al.]. 2019. Effects of Mental Fatigue on Small-World Brain Functional Network Organization. Neural Plasticity،Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1201020
Modern Language Association (MLA)
Li, Gang…[et al.]. Effects of Mental Fatigue on Small-World Brain Functional Network Organization. Neural Plasticity No. 2019 (2019), pp.1-10.
https://search.emarefa.net/detail/BIM-1201020
American Medical Association (AMA)
Li, Gang& Luo, Youdong& Zhang, Zhengru& Xu, Yanting& Jiao, Weidong& Jiang, Yonghua…[et al.]. Effects of Mental Fatigue on Small-World Brain Functional Network Organization. Neural Plasticity. 2019. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1201020
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1201020