TABLE 1.

The three preset data processing functions of Tobii Pro Lab. Source: adapted from Tobii Technology (2019).

Preset function	Raw Gaze Filter	Fixation Filter	Attention Filter
Description:	Extracts raw gaze samples with three pre-processing functions	Applies I-VT fixation classifier algorithm with the velocity threshold of 30°/s	Applies I-VT fixation classifier algorithm with the velocity threshold of 100°/s
Data composition:	Data includes all gaze samples (including all noise)	Excludes smooth pursuit and vestibulo-ocular reflex (VOR)	Includes smooth pursuit, VOR and 10–15% of saccades
Attention allocated to the stimulus:	Overestimated	Slightly underestimated	Slightly overestimated
Best suited for:	Studies focusing on mechanisms of vision and dwells	Controlled studies with only fixations and saccades	Mobile environments with movement