Diffusion spectral imaging modules correlate with EEG LORETA neuroimaging modules

Objectives: The purpose of this study was to test the hypothesis that the highest temporal correlations between 3‐dimensional EEG current source density corresponds to anatomical Modules of high synaptic connectivity. Methods: Eyes closed and eyes open EEG was recorded from 19 scalp locations with a linked ears reference from 71 subjects age 13–42 years. LORETA was computed from 1 to 30 Hz in 2,394 cortical gray matter voxels that were grouped into six anatomical Modules corresponding to the ROIs in the Hagmann et al.'s [ 2008 ] diffusion spectral imaging (DSI) study. All possible cross‐correlations between voxels within a DSI Module were compared with the correlations between Modules. Results: The Hagmann et al. [ 2008 ] Module correlation structure was replicated in the correlation structure of EEG three‐dimensional current source density. Conclusions: EEG Temporal correlation between brain regions is related to synaptic density as measured by diffusion spectral imaging. Hum Brain Mapp, 2011. © 2011 Wiley‐Liss, Inc.

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