Pupil size reflects effort but not motor fatigability during a sustained motor task
Jenny Imhof, Caroline Heimhofer, Marc Baechinger, Sarah Nadine Meissner, Richard Ramsey, Nicole Wenderoth
This study investigates whether pupil size reflects physical effort or motor fatigability during sustained repetitive movement and finds that it reflects effort but not fatigability.
bioRxiv · Nov 10, 2026 · PreprintNeuroscience