Systematic mislocalization in terms of constant error (mm) as a function of stimulus distance and stimulus duration (target-mask-onset delay) in a single-task and b dual-task conditions. The eight levels of stimulus duration are shown in three lines that group together the shortest (29, 57, and 86 ms), intermediate (114, 143, and 200 ms), and longest (300 and 400 ms) stimulus durations. Negative values represent undershoots