Figure 1.

A schematic of the experimental paradigm illustrates the sequence of events and their timing within a trial, for each of the auditory (A) and visual (B) tasks. The spoken phoneme (/ba/ or /da/) served to cue participants to attend right or to attend left for the occurrence of a possible target. These auditory cues were followed 1000 ms later by the imperative stimulus (S2: Gabors in the visual task and a noise burst in the auditory task). In the depiction of the visual task (B), a target ring is present in the left Gabor. C and D delineate the stimulus probabilities at cued and uncued locations for auditory and visual tasks.