Research Article
Contact-Free Cognitive Load Recognition Based on Eye Movement
Table 1
The salient features in light controlled condition.
| | | High cognitive load | Low cognitive load | t-score | p value |
| | Pupil size (Pup_size) | 389 (90) | 350 (78) | 6.583 | 0.000 | | Fixation frequency (Fix_fre) | 1.18 (0.238) | 0.936 (0.32) | 5.851 | 0.000 | | Blink frequency (Bli_fre) | 0.149 (0.083) | 0.222 (0.122) | −4.528 | 0.000 | | Fix pupil size (Fix_Pup_size) | 395 (93) | 350 (74) | 6.111 | 0.000 | | Saccade velocity (Sac_vel) | 168 (29) | 137 (26) | 7.621 | 0.000 | | Saccade duration (Sac_dur) | 81.3 (53.6) | 98.9 (40.7) | −2.976 | 0.007 | | Saccade peak velocity (Sac_peak_vel) | 388 (94) | 520 (205) | −3.55 | 0.002 | | Std of saccade duration (Sac_dur_std) | 63.5 (30.4) | 105.8 (49.2) | −4.191 | 0.000 | | Std of saccade peak velocity (Sac_peak_vel) | 358 (151) | 511 (254) | −3.602 | 0.002 | | Adjacent fixation point distance (Adj_fix_dis) | 6.86 (1.65) | 6.22 (1.92) | 2.772 | 0.011 |
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M: mean; Std: standard deviation; significance level = 0.05
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