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Complex Synchronization Patterns in the Human Connectome Network

  • Pablo Villegas
  • Jorge Hidalgo
  • Paolo Moretti
  • Miguel A. MuñozEmail author
Conference paper
Part of the Springer Proceedings in Complexity book series (SPCOM)

Abstract

A major challenge in neuroscience is posed by the need for relating the emerging dynamical features of brain activity with the underlying modular structure of neural connections, hierarchically organized throughout several scales. The spontaneous emergence of coherence and synchronization across such scales is crucial to neural function, while its anomalies often relate to pathological conditions. Here we provide a numerical study of synchronization dynamics in the human connectome network. Our purpose is to provide a detailed characterization of the recently uncovered broad dynamic regime, interposed between order and disorder, which stems from the hierarchical modular organization of the human connectome. In this regime—similar in essence to a Griffiths phase—synchronization dynamics are trapped within metastable attractors of local coherence. Here we explore the role of noise, as an effective description of external perturbations, and discuss how its presence accounts for the ability of the system to escape intermittently from such attractors and explore complex dynamic repertoires of locally coherent states, in analogy with experimentally recorded patterns of cerebral activity.

Keywords

Coherent State Noise Amplitude Connectivity Matrix Intermediate Regime Intrinsic Frequency 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

We acknowledge financial support from J. de Andalucía P09-FQM-4682 and the Spanish MINECO FIS2012-37655-C02-01 and FIS2013-43201-P.

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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • Pablo Villegas
    • 1
  • Jorge Hidalgo
    • 1
  • Paolo Moretti
    • 2
  • Miguel A. Muñoz
    • 1
    Email author
  1. 1.Departamento de Electromagnetismo y Física de la Materia e Instituto Carlos I de Física Teórica y ComputacionalUniversidad de GranadaGranadaSpain
  2. 2.Institute of Materials Simulation (WW8)Friedrich-Alexander-University Erlangen-NünbergFürthGermany

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