Fig. 1.

Stimulus streams from experiment 1. Stimuli were organized into 2 channels, each consisting of 2 rapid serial visual presentation (RSVP) streams and 1 rapid serial auditory presentation (RSAP) stream of letters. In each session, participants focused attention on just one component of each channel (e.g., auditory component of first channel, visual component of second channel), with T1 and T2 in the attended component of first and second channels, respectively. Each stream contained 7 letters, with T1 in the 3rd position. T2 could follow T1 at stimulus onset asynchronies (SOAs) of 100 ms, 300 ms (illustrated), or 700 ms. “NT” indicates events containing only nontargets (letters LMNX), while “P” and “D” indicate events containing the respective target.