Characterization of Cortical Networks during Motor Tasks in Humans

Authors

  • Fabrizio De Vico Fallani IRCCS “Fondazione Santa Lucia”, "Sapienza" University of Rome
  • Laura Astolfi IRCCS “Fondazione Santa Lucia”, "Sapienza" University of Rome
  • Febo Cincotti IRCCS “Fondazione Santa Lucia”
  • Fabio Babiloni IRCCS “Fondazione Santa Lucia”, "Sapienza" University of Rome
  • Alfredo Colosimo “Sapienza”, University of Rome

Keywords:

Cortical Networks, MVAR models, Graph theory

Abstract

The present study proposes a theoretical graph approach in order to evaluate the functional connectivity patterns obtained from high-resolution EEG signals. In particular, we evaluated the dynamics of the cerebral networks during the preparation and the execution of the foot movement in healthy subjects. High-resolution EEG represents a novel technique that can estimate non-invasively the cortical activity from the standard scalp EEG measurements. Brain functional networks are obtained by the time-varying Partial Directed Coherence, which describes the time-frequency relationships between the signals of different cortical regions. The evaluation of the time-varying topology of the estimated networks is addressed by means of graph theory, which describes concisely the complexity of the interconnected cerebral system. Altogether, our findings reveal new insights about the time-frequency dynamics of the cortical networks involved throughout the performance of a simple foot movement.

Author Biographies

Fabrizio De Vico Fallani, IRCCS “Fondazione Santa Lucia”, "Sapienza" University of Rome

Department of Human Physiology and Pharmacology

Laura Astolfi, IRCCS “Fondazione Santa Lucia”, "Sapienza" University of Rome

Department of Human Physiology and Pharmacology

Fabio Babiloni, IRCCS “Fondazione Santa Lucia”, "Sapienza" University of Rome

Department of Human Physiology and Pharmacology

Alfredo Colosimo, “Sapienza”, University of Rome

Department of Human Physiology and Pharmacology

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Published

20-11-2008

How to Cite

De Vico Fallani, F., Astolfi, L., Cincotti, F., Babiloni, F., & Colosimo, A. (2008). Characterization of Cortical Networks during Motor Tasks in Humans. Biophysics and Bioengineering Letters, 1(3). Retrieved from https://rosa.uniroma1.it/rosa00/index.php/biophysics_and_bioengineering/article/view/2777

Issue

Section

Section 2: Biophysics PhD

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