Fig. 2
Example of the experimental setup: the participant sat behind a desk on which a keyboard (in white in the figure) was placed for the collection of motor responses. A video projector was positioned in front of the desk, projecting stimuli on the wall in front of the participant (~ 360 cm). The luminance of the environment was kept constant and matched to that of the stimuli (M = 9.3 lux). The participant wore the Tobii Pro Glasses 2 eye tracking system (i.e. the participant’s glasses in the picture) to continuously measure left and right pupil size changes. The picture was created through the Unity graphic engine software (Unity Technologies), version 2022.3.21f1 (https://unity.com).
