POSTER PRESENTATION Open Access Low-frequency EEG correlates of fMRI in the resting state

Recently, researchers have taken interest in simulta-neously recording electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) to explore the relationship between the blood oxygen level depen-dent (BOLD) signal and underlying neuronal activity[1]. Many studies investigate BOLD signal relationship to high-pass (> 1 Hz) filtered EEG data, but little work on has been done on slow (< 1Hz) cortical potential corre-lates of fMRI because low frequency EEG data are com-monly discarded as drift artifacts[1]. Nevertheless, much slower (< 0.1 Hz) components of the fMRI signal are used to establish functional resting state networks (RSNs