Figure 6.

Local luminance modulation with no contingency between patch and target location. (A) Change in pupil diameter following the presentation of patch stimuli in different conditions in visual-delay saccade task. (B) Pupil size in diameter (200 to 800 ms) between bright and dark patch conditions for each individual participant on the visual-delay saccade task (n = 6). (C) Change in pupil diameter following the presentation of patch stimuli in different conditions in memory-delay saccade task. (D) Pupil size in diameter (200 to 800 ms) between bright and dark patch conditions for each individual participant on the memory-delay saccade task (n = 10). In A, C, the shaded colored regions surrounding the pupillary response represent ± standard error range (across participants) for different conditions. The black bar on X-axis indicates the time line of patch presentation. In D, circles indicate the data collected in the experiment with 8 possible target locations whereas squares indicate the data collected in the experiment with 16 possible target locations. n: number of participants.