ERP analysis.

<p><i>A and B. EEG grand average</i>. EEG grand average time-courses for contralateral trials pooled over electrodes electrodes O2, PO4, PO8 (left hemifield trials) and O1, PO3, PO7 (right hemifield trials) for the EEG only (<i>A</i>) and combined EEG-fMRI (<i>B</i>) data acquisition. The pattern of shaded and non-shaded areas reflects the five non-overlapping time-windows used for the subsequent information theoretic analyses. <i>C and D. EEG grand average topography</i>. Topography plots of the entire EEG electrode set show potentials for time-points 100, 140, 260 and 440 ms post-stimulus. The main positive deflections at all time-points were observed for a set of parieto-occipital electrodes (O2, O1, PO8, PO7, P8, P7, PO4, PO3).