Fig. 8

Eye gaze density across the five-minute trial duration under the four experimental conditions for a representative participant. (a) No wobble board, no TMT. (b) No wobble board, TMT. (c) Wobble board, no TMT. (d) Wobble board, TMT. For eye trackers used without a monitor, as in this study, the “Active Display Area” shows the calibration points when aligning the eye tracker with the user’s eyes. The origin of the Active Display Coordinate System is at the upper left corner of this area, with the point (0, 0) representing the upper left corner and (1, 1) representing the lower right corner.