Community structure in large-scale cortical networks during motor acts

Fabrizio De Vico Fallani, Alessandro Chessa, Miguel Valencia, Mario Chavez, Laura Astolfi, Febo Cincotti, Donatella Mattia, Fabio Babiloni

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The purpose of the present work is to evaluate the community structure of the cortical network subserving the neurophysiologic processes in simple motor acts. To this end, we studied the topological properties of the functional brain connectivity in the frequency domain. The functional networks were estimated by means of the imaginary coherence from a dataset of high-resolution EEG recordings (4094 cortical sources) in a group of healthy subjects (n = 10) during a finger extension task. The analysis of the community structure was addressed through a particular detection algorithm that optimizes the modularity, a function related to the level of internal clustering inside the communities in the network. The principal results indicate that the cortical network changes its structural organization during the motor execution with respect to a baseline condition. Notably in the Beta band (12.5-30 Hz), the level of intra-module connectivity decreases, while inter-module connectivity increases reflecting the need for a neural integration of distant regions. Notably, this distributed interaction involves anatomical regions belonging to both the hemispheres including pre-motor and primary motor areas in the frontal and central part of the cortex as well as parietal associative regions, which are related to the planning, selection and execution of actions.

Original languageEnglish
Pages (from-to)603-610
Number of pages8
JournalChaos, Solitons and Fractals
Volume45
Issue number5
DOIs
Publication statusPublished - 2012

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Community Structure
Connectivity
Module
Hemisphere
Structural Change
Cortex
Topological Properties
Modularity
Frequency Domain
Baseline
High Resolution
Optimise
Planning
Clustering
Internal
Decrease
Evaluate
Interaction

ASJC Scopus subject areas

  • Mathematics(all)

Cite this

Community structure in large-scale cortical networks during motor acts. / De Vico Fallani, Fabrizio; Chessa, Alessandro; Valencia, Miguel; Chavez, Mario; Astolfi, Laura; Cincotti, Febo; Mattia, Donatella; Babiloni, Fabio.

In: Chaos, Solitons and Fractals, Vol. 45, No. 5, 2012, p. 603-610.

Research output: Contribution to journalArticle

De Vico Fallani, Fabrizio ; Chessa, Alessandro ; Valencia, Miguel ; Chavez, Mario ; Astolfi, Laura ; Cincotti, Febo ; Mattia, Donatella ; Babiloni, Fabio. / Community structure in large-scale cortical networks during motor acts. In: Chaos, Solitons and Fractals. 2012 ; Vol. 45, No. 5. pp. 603-610.
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