Figure 1

Auditory paradigm and pupillometry setup Reproduced with permission from39 (a) On each trial 5 sounds were presented. (b) Each of the four experimental blocks started with four identical series of sounds defining the global regularity, before delivering global standard (80%) or global deviant (20%) trials, that were also either local standard or local deviant trials. (c) Eyebrain mobile device including two independent infrared cameras centred on each pupil captures pupil images of each eye at a sampling rate of 120 Hz.