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Is apparent fixational drift in eye-tracking data due to filters or eyeball rotation?

Niehorster, Diederick C. ; Zemblys, Raimondas ; Holmqvist, Kenneth


Eye trackers are sometimes used to study the miniature eye movements such as drift that occur while observers fixate a static location on a screen. Specifically, analysis of such eye-tracking data can be performed by examining the temporal spectrum composition of the recorded gaze position signal, allowing to assess its color. However, not only rotations of the eyeball but also filters in the eye ...


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