Figure 2
Amplitude changes in the direction of the task-relevant stimulus. (a) Illustration of the expected changes in the vertical saccade amplitude from trial n (left column) to trial n + 1 (right column), when the upper (first row) or lower (second row) stimulus was cued as being task-relevant in trial n. The shown saccade trajectories do not represent actual data. (b) Distributions of trial-to-trial amplitude changes when the upper (first row) or lower (second row) stimulus was cued as being task-relevant. The displayed data stems from one representative participant. Vertical saccade amplitudes should become more positive/negative in trial n + 1 when the upper/lower stimulus was cued as being task-relevant in trial n. (c,d) Trial-to-trial changes in the vertical saccade amplitude in the memory-task (c) and saccade-only experiment (d). Although participants in the saccade-only experiment were not involved in the memory task, we still randomly presented one of two auditory retro-cues in each trial. (c,d) Small symbols denote individual participant’s data, large symbols the respective group mean. Error bars represent 95% confidence intervals.
