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F. Babiloni, C. Babiloni, F. Carducci, L. Angelone, C. Del-Gratta, G. L. Romani, P. M. Rossini, F. Cincotti. Linear inverse estimation of cortical sources by using high resolution EEG and fMRI priors. Bioelectromagnetism, 3(1), 2001.


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In this paper we presented two methods for the modeling of human cortical activity by using combined high-resolution electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) data. These methods were based on linear inverse estimation and used subjects multi-compartment head model (scalp, skull, dura mater, cortex) constructed from magnetic resonance images and a multi-dipole source model. Hemodynamic responses of the investigated cortical areas as derived from block-design and event-related functional Magnetic Resonance Imaging (fMRI) were used as priors in the resolution of the linear inverse problem. High resolution EEG (128 electrodes) and fMRI data were recorded in separate sessions, while normal subjects executed voluntary right one-digit movements. Results showed that linear inverse solutions obtained with fMRI priors present more localized spots of activation with respect to those obtained without fMRI priors. Remarkably, the spots of activation were localized in the hand regions of the primary somatosensory (post-central) and motor (pre-central) areas contralateral to the movement. This may suggest that both methods increased the spatial resolution of linear inverse solutions computed from EEG data


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F. Babiloni
C. Babiloni
F. Carducci
L. M. Angelone
C. Del-Gratta
G. L. Romani
P. M. Rossini
F. Cincotti

BibTex Reference

   Author = {Babiloni, F. and Babiloni, C. and Carducci, F. and Angelone, L. and Del-Gratta, C. and Romani, G. L. and Rossini, P. M. and Cincotti, F.},
   Title = {Linear inverse estimation of cortical sources by using high resolution {EEG} and f{MRI} priors},
   Journal = {Bioelectromagnetism},
   Volume = {    3},
   Number = {1},
   Year = {2001}

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