Figure 5. Averaged relative pupil dilation per repetition during the presentation of the retrieval cue, plotted separately for the long (orange, solid; 14 trials per participant) and short (green, dashed; 12 trials per participant) retention interval (RI) sets and aligned to the onset of the presentation of the retrieval cue at t = 0.

Pupil dilation is calculated as percentage change relative to the 250 ms before the first repetition, indicated by the grey box in the leftmost panel.