Task used in Experiment 1.

<p>A. Schematic depiction of the task. The delay between the cue onset and the target letter onset is called the Cue-Target Onset Asynchrony (CTOA), whereas the delay between letter onset and saccade onset is called the Target-Saccade Onset Asynchrony (TSOA). TSOA equals the CTOA minus the saccade latency and is therefore highly correlated with CTOA. B. Saccadic latencies in the “saccade” task versus the “dual” task: the 1 to 100 latency percentiles in the “saccade” task are plotted against the 1 to 100 latency percentiles in the “dual” task. All subjects but subject n°5 are close to the equivalency line (gray dotted line). In addition, subject n°5 had longer latencies than other subjects.