Abstract
Brain functional networks extracted from fMRI can improve the accuracy of EEG source localization. However, the coupling between EEG and fMRI remains poorly understood, i.e., whether fMRI networks provide information about the magnitude of neural activity, and whether neural sources demonstrate temporal correlations within each network. In this paper, we present an improved version of the NEtwork-based SOurce Imaging method (iNESOI) through Bayesian model comparison. Different models correspond to various matching between EEG and fMRI, and the appropriate one is selected by data with the model evidence. Synthetic and real data tests show that iNESOI has potential to select the appropriate fMRI priors to reach a better source reconstruction than some other typical approaches.
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Acknowledgments
This project was funded by grants from the National Nature Science Foundation of China #60736029, the 863 Project 2009AA02Z301 and the 973 project 2011CB707803. The authors are grateful to the FIL methods group (http://www.fil.ion.ucl.ac.uk) for providing the data.
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Lei, X., Hu, J. & Yao, D. Incorporating fMRI Functional Networks in EEG Source Imaging: A Bayesian Model Comparison Approach. Brain Topogr 25, 27–38 (2012). https://doi.org/10.1007/s10548-011-0187-9
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DOI: https://doi.org/10.1007/s10548-011-0187-9