Multiple Electrophysiological Markers of Visual-Attentional Processing in a Novel Task Directed toward Clinical Use

Figure 4

Event-related potentials that isolate the P3a and P3b componentsfrom averages that take into account the side of the target stimulus(in target-present trials). We subtracted the average waveform from thefrequent-target, frequent-position, condition (the most frequently-occurring condition) from the rare-position condition; the solid line shows thisdifference wave at Pz, while the dashed line shows this difference at Fz.