Research Article
Contact-Free Cognitive Load Recognition Based on Eye Movement
Table 2
The salient features in light change condition.
| | | High cognitive load | Low cognitive load | t-score | p value |
| | Pupil size (Pup_size) | 464 (110) | 430 (93) | 4.351 | 0.000 | | Fixation frequency (Fix_fre) | 1.15 (0.172) | 0.963 (0.239) | 3.561 | 0.002 | | Blink frequency (Bli_fre) | 0.165 (0.075) | 0.233 (0.132) | −3.079 | 0.005 | | Fix pupil size (Fix_pup_size) | 456 (112) | 433 (108) | 2.428 | 0.023 | | Saccade velocity (Sac_vel) | 159 (29) | 129 (27) | 5.263 | 0.000 | | Saccade duration (Sac_dur) | 53.3 (16.1) | 87.2 (36.2) | −5.106 | 0.000 | | Blink duration (Bli_dur) | 137 (59) | 192 (121) | −2.711 | 0.012 | | Saccade velocity variation (Sac_vel_var) | 0.505 (0.096) | 0.663 (0.162) | −7.107 | 0.000 | | Std of saccade duration (Sac_dur_std) | 73 (37.8) | 117 (89.3) | −3.565 | 0.002 |
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M: mean, Std: standard deviation; significance level = 0.05
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