NDLI: Estimation of Effective and Functional Cortical Connectivity From Neuroelectric and Hemodynamic Recordings

Content Provider	IEEE Xplore Digital Library
Author	Astolfi, L. De Vico Fallani, F. Cincotti, F. Mattia, D. Marciani, M.G. Salinari, S. Sweeney, J. Miller, G.A. He, B. Babiloni, F.
Copyright Year	2001
Abstract	In this paper, different linear and nonlinear methodologies for the estimation of cortical connectivity from neuroelectric and hemodynamic measurements are reviewed and applied on common data set in order to highlight similarities and differences in the results. Different effective and functional connectivity methods were applied to motor and cognitive data sets, including structural equation modeling (SEM), directed transfer function (DTF), partial directed coherence (PDC), and direct directed transfer function (dDTF). Comparisons were made between the results in order to understand if, for a same dataset, effective and functional connectivity estimators can return the same cortical connectivity patterns. An application of a nonlinear method [phase synchronization index (PSI)] to similar executed and imagined movements was also reviewed. Connectivity patterns estimated with the use of the neuroelectric information and of the information from the multimodal integration of neuroelectric and hemodynamic data were also compared. Results suggests that the estimation of the cortical connectivity patterns performed with the linear methods (SEM, DTF, PDC, dDTF) or with the nonlinear method (PSI) on movement related potentials returned similar cortical networks. Differences in cortical connectivity were noted between the patterns estimated with the use of multimodal integration and those estimated by using only the neuroelectric data.
Sponsorship	IEEE Engineering in Medicine and Biology Society
Page Count	10
File Size	794830
Starting Page	224
Ending Page	233
File Format	PDF
ISSN	15344320
Volume Number	17
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hemodynamics Numerical analysis Transfer functions Equations Coherence Physiology Electroencephalography Brain modeling Magnetic recording structural equation modeling (SEM) Directed transfer function (DTF) functional cortical connectivity high-resolution EEG partial directed coherence (PDC)
Content Type	Text
Resource Type	Article
Subject	Neuroscience Rehabilitation Internal Medicine Biomedical Engineering Computer Science Applications

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