Figure 3. Early-latency cueing effects.

a) results from Experiment 1. An occipitally distributed N1 component, elicited by shift-inducing cues, was larger over the contralateral hemisphere and smaller over the ipsilateral hemisphere, compared to the N1 elicited by non-informative cues. a) results from Experiment 2. In addition to replicating the N1 attention effect, we also observed a significant P1 modulation here that preceded the N1 in time. This P1 effect was found mainly over the ipsilateral hemisphere and is characterized by a more parietal scalp distribution than the subsequent N1.