Figure 1.

Early differential ERP activity: posterior negative potentials. A, B, Grand-averaged ERP waveforms for a selected right occipital sensor (number 90), difference scalp potential maps, and L2-minimum-norm estimates (L2-MNE) serve to illustrate the main effects of attention (A) and emotion (B). C, ERP waveforms for sensor number 90 and difference scalp potential maps (target − nontarget) for erotica, people, and mutilation picture contents illustrate the additive relationship of attention and emotion. Paying attention to emotion had similar effects for high- and low-arousing stimulus contents. The maps display a right view.