Fig. 4.

A) Three-dimensional maps illustrating the scalp distribution of the ERP difference waveforms voltage at their maximal peaks for the Control (A) and SAH patients (B) groups at the time window 200–325 ms. B) Cortical surface estimates based on Minimum norm at the 270 ms peak of the averaged FRN component are shown for both controls (above) and patients (below). C) Source locations by distributed CLARA and discrete dipole solutions for the FRN at the peak time window 240–280 based on the grand average ERP's for the Controls (superior) and SAH patients (inferior) groups. The location of the main sources for both groups are shown (Anterior cingulate gyrus –ACC- (Red), Middle cingulate gyrus –MCC- (Blue) and bilateral insula (Green and Pink)). A: anterior; R: right. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)