Figure 2.

Schematic of the trial structure. Subjects used an Xbox controller to initiate each trial. After the key press there was a 500-ms delay, followed by a stimulus presented from one of the 17 locations. In the vision-only condition, a white disk was presented for 200 ms; in two audition conditions (with or without blindfold) pink noise was presented for 200 ms. After the target presentation, the subjects needed to verbally report the location of the stimuli, first responding left or right, then responding with an angle relative to directly in front of the subject. The −40° and 40° locations were omitted because these locations were at the intersection between the screens where visual stimuli cannot be presented properly.