Figure 3. Trial sequences in Experiment 2.

The small eye and red dotted line depict gaze position. White arrows on the annuli depict rotations of that particular annulus. Like in Experiment 1, all trials started with a period of fixation with two static annuli on screen. (A) In Full Match trials, subjects remained at fixation with the static annuli for as long as the presaccadic inducer time in Spatiotopic and Saccade Cost trials. After this period of fixation, the Inducer rotated for 16.7, 33.3 or 50.0 ms. In addition, in Full Match trials, the inducer could also rotate for 800 ms. Then, the Transient was presented. (B) Spatiotopic trials were similar to the Spatiotopic trials in Experiment 1. (C) In Saccade Cost trials subjects remained fixation and the annuli remained static up until saccade offset. A saccade was executed after an auditory cue. Upon saccade landing, the annulus around fixation started rotating (Inducer), succeed by the Transient. (D) In Saccade Mimic trials, the retinal input of Spatiotopic trials was mimicked, without the execution of a saccade. The Presaccadic inducer phase consisted of a peripheral rotating annulus and a central static annulus. Then, the peripheral annulus stopped rotating and the central annulus rotated for 16.7, 33.3 or 50.0 ms. In all trial types, the Transient would always be presented around the current fixation point.