A) Source locations, B) source waveforms, C) the spatial distribution on the cortex of the average MLE of source variance averaged over the entire time period, D) the map of quantified BOLD fMRI responses, E) the time courses of the MLE of source variances at three source locations respectively, F) the instantaneous cortical distributions of the MLE of source variances at 3 peak latencies (40, 100 and 160 ms) identified from E), G) the instantaneous cortical distributions of time-variant source variances derived from combination of fMRI and EEG at the 3 peak latencies.