Fig. 10
Abrupt reduction in the PDR for regularities more complex than REG1. a Average pupil diameter relative to the transition in Experiment 4A (n = 12). Solid lines represent the average normalized pupil diameter, relative to the transition. The shaded area shows ± 1 SEM. Colored horizontal lines indicate time intervals where cluster-level statistics showed significant differences between each change condition and its control. A robust PDR was evoked by the transition in RAND20-REG1, becoming significant between 500 and 1340 ms post-transition The data also replicate the general pattern in Experiments 1 and 2: Both STEP and REG10-RAND20 evoked a PDR; the former started from 720 ms lasting through to 1720ms, and the latter from 1020 ms onwards. No significant difference between RAND20-REG10 and RAND20 was observed. b Average pupil diameter over time from stimulus onset. No differences were observed between any of the conditions. c Behavioral results for the gap detection task in Experiment 4A with ±1 SEM error bars, and gray circles representing individual participant data. There was no statistical difference between conditions. d Average pupil diameter over time relative to the transition in Experiment 4B: [Left] Group A (n = 15). A clear PDR is observed for RAND20-REG1 which diverged from its control, RAND20, from 746 to 1620ms no significant differences were observed in the other conditions. [Middle] Group B (n = 15). RAND20-REG1 diverged from RAND20 between 540 ms and1960 ms. RAND20-REG2 also showed a significant PDR between 880ms-1460ms, peaking at 1300 ms. RAND20-REG5 and RAND20-REG10 were not significantly different from RAND20. Comparing between transition conditions, RAND20-REG1 was significantly greater than the other transition conditions from ~600 ms to ~1800ms post-transition. [Right] Both groups combined (n = 30). Significant PDRs were observed for RAND20-REG1 (from 580 to 1920ms) and RAND20-REG2 (from 820 to 1560 ms). Comparing between transition conditions, RAND20-REG1 was significantly greater than the other transition conditions from ~600 ms to ~1800ms post-transition. e The behavioral performance for both groups was at ceiling
