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Construction and analysis of functional brain network based on emotional electroencephalogram

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Abstract 

Networks play an important role in studying structure or functional connection of various brain areas, and explaining mechanism of emotion. However, there is a lack of comprehensive analysis among different construction methods nowadays. Therefore, this paper studies the impact of different emotions on connection of functional brain networks (FBNs) based on electroencephalogram (EEG). Firstly, we defined electrode node as brain area of vicinity of electrode to construct 32-node small-scale FBN. Pearson correlation coefficient (PCC) was used to construct correlation-based FBNs. Phase locking value (PLV) and phase synchronization index (PSI) were utilized to construct synchrony-based FBNs. Next, global properties and effects of emotion of different networks were compared. The difference of synchrony-based FBN concentrates in alpha band, and the number of differences is less than that of correlation-based FBN. Node properties of different small-scale FBNs have significant differences, offering a new basis for feature extraction of recognition regions in emotional FBNs. Later, we made partition of electrode nodes and 10 new brain areas were defined as regional nodes to construct 10-node large-scale FBN. Results show the impact of emotion on network clusters on the right forehead, and high valence enhances information processing efficiency of FBN by promoting connections in brain areas.

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Data availability

The data used to support the findings of this study are database for emotion analysis using physical signals (DEAP): http://www.eecs.qmul.ac.uk/mmv/datasets/deap/readme.html.

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Funding

This work was sponsored by National Natural Science Foundation of China (Grant No. 61301012, No. 61471140), Sci-tech Innovation Foundation of Harbin (No. 2016RALGJ001), and China Scholarship Council.

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  1. School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China

    Dan Liu, Tianao Cao, Qisong Wang, Meiyan Zhang, Xinrui Jiang & Jinwei Sun

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  1. Dan Liu
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Liu, D., Cao, T., Wang, Q. et al. Construction and analysis of functional brain network based on emotional electroencephalogram. Med Biol Eng Comput 61, 357–385 (2023). https://doi.org/10.1007/s11517-022-02708-8

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