PMC

PC3 scores by individual. (A) PC3 scores are shown for each participant, averaged across stimuli, exemplar, and task. Score represented on the y-axis, and the x-axis is jittered for visibility. Representative subjects are shown for high (subject 34, PC3 score: +190), average (subject 38, PC3 score: +15), and low (subject 27, PC3 score: −207); scores are labeled and filled in with gray. (B) Fixation heat map for subject 34, a representative participant with a high PC3 score (+190) averaged across condition and exemplar. Heat map is based on all fixations by the subject. The overlap color indicates the percentage of total fixation time spent on that location with warmer colors indicating more time. (C) Fixation heat map for subject 38, a representative participant with a middle PC3 score (+15) averaged across condition and exemplar. Heat map is based on all fixations by the subject. Color on stimulus image indicates time spent, percentage of total fixation time spent on that location with warmer colors indicating more time. (D) Fixation heat map for subject 27, a representative participant with a low PC3 score (−207) averaged across condition and exemplar. Heat map is based on all fixations by the subject. Color on stimulus image indicates time spent, percentage of total fixation time spent on that location with warmer colors indicating more time.

The heat maps and gaze plot maps of drivers’ eye-movement characteristics in anxiety. (a) Heat map of fixation count before the change-point occurs; (b) Heat map of fixation count before the change-point occurs; (c) Heat map of fixation count after change-point 2 occurs; (d) Trajectory map of fixation duration before the change-point occurs; (e) Trajectory map of fixation duration after change-point 1 occurs; (f) Trajectory map of fixation duration after change-point 2 occurs.

Eye movement diagram of the waterfall forest environment by using fixation heat map (A) and fixation trajectory map (B), and eye movement diagram of the park grass environment by using fixation heat map (C) and fixation trajectory map (D), and eye movement diagram of the urban street environment by using fixation heat map (E) and fixation trajectory map (F).

(a) The heat heterogeneity; (b) the fixation probability of a random mutant with fitness 1.9; (c) the fixation of a random mutant with fitness 1.5; (d) the fixation probability of a random mutant with fitness 1.1; (e) the fixation probability of a random mutant with fitness 0.7; (f) the degree heterogeneity. The 40 graphs are almost uniformly randomly sampled from the undirected connected graphs set with 12 nodes. Here the graph index is ordered according to increasing its heat heterogeneity. The rank order correlation of the fixation probability with heat heterogeneity is 0.932 for r = 0.7 and −0.916, −0.956, −0.953 for r = 1.1, 1.5, 1.9, respectively.