Figure 1.

Schematic illustrations of the experimental situation in Exp. 1. After the presentation of a fixation point (0.6 × 0.6 deg) and a gray ring (2 deg in diameter, 0.05 deg in width) for 1200−1500 ms (randomly assigned in each trial), a visual target (1 deg) tilting either left or right was presented at the center of the ring for 24 ms. The ring color was also changed from gray to black as the cue for the target onset. White noise bursts were presented through headphones (Exp. 1A) or loud speakers (Exp. 1B) for 200 ms. Participants were asked to judge the target’s orientation.