Pupil size influences the eye-tracker signal during saccades
While it is known that scleral search coils-measuring the rotation of the eye globe-and modern, video based eye trackers-tracking the center of the pupil and the corneal reflection (CR)-produce signals with different properties, the mechanisms behind the differences are less investigated. We measure how the size of the pupil affects the eye-tracker signal recorded during saccades with a common pup