Fig. 1.

Example of a typical run in the attentional control RSVP paradigm. At the beginning of the run, a cue is presented directing the subject to start paying attention to one of the streams. Subjects are instructed to detect digit targets embedded among letter distractors. If digit ‘4’ is detected, subjects shift their attention to the previously ignored stream. If digit ‘2’ is detected, subjects hold their attention within the attended stream. Targets are then sorted based on the preceding trial such that if the target was presented right after participant shifted attention into the previously ignored stream, it is labeled a shift target. If, on the other hand, the target was presented within the stream that already contained a target digit, then this target is labeled a hold target