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Characterization of Functional Brain Networks and Emotional Centers Using the Complex Networks Techniques

  • Richa TripathiEmail author
  • Dyutiman Mukhopadhyay
  • Chakresh Kumar Singh
  • Krishna Prasad Miyapuram
  • Shivakumar Jolad
Conference paper
Part of the Studies in Computational Intelligence book series (SCI, volume 882)

Abstract

In this work, we construct functional networks of the human brain using the coherence measure on the EEG time-series data, in response to external audio-visual stimuli. These stimuli were nine different movie clips selected to evoke different emotional states. The constructed networks for each emotion were characterized using network measures such as clustering coefficient, small worldness, the efficiency of information propagation, etc. in different frequency bands corresponding to brain waves. We used a community detection algorithm to infer the segregation of functional correlations in the brain into modules. Further, using the variation of information measure, we compare and contrast the modular organizations of different brain networks. We observe that the different brain networks are closest in their organization into modules in alpha frequency band while they farther apart in other bands. We identified crucial network nodes or hubs using centrality measure, and find that most of the hubs were common for all networks and belong to a specific location on the brain map. In summary, our work demonstrates the utilization of the network theoretical and statistical tools for understanding and differentiating different brain networks corresponding to the perception of varieties of emotional stimuli.

Keywords

Brain networks Functional connectivity Modular organization Hubs 

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Richa Tripathi
    • 1
    Email author
  • Dyutiman Mukhopadhyay
    • 2
  • Chakresh Kumar Singh
    • 1
  • Krishna Prasad Miyapuram
    • 1
  • Shivakumar Jolad
    • 3
  1. 1.Indian Institute of Technology GandhinagarGandhinagarIndia
  2. 2.University College LondonLondonUK
  3. 3.Flame UniversityPuneIndia

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