Eye-Tracking Analysis for Emotion Recognition

Table 9

Mean values and standard deviations of all features for three classes of emotions.

No.	Feature	C1		C2		C3
		Mean	Std.	Mean	Std.	Mean	Std.
1	Number of fixations	−0.33	0.50	−0.29	0.88	0.17	1.08
2	Overall fixation vector	−0.31	0.47	−0.16	1.05	0.09	0.91
3	Average duration of fixation	0.11	0.95	−0.50	0.85	0.18	1.11
4	Variance of fixation duration	0.17	1.04	−0.42	0.63	0.15	1.14
5	Skewness of fixation duration	0.18	0.76	0.03	1.23	−0.13	1.00
6	Kurtosis of fixation duration	−0.31	0.48	1.00	1.00	−0.11	0.90
7	Average saccade amplitude	−0.33	0.51	0.48	0.88	0.27	1.52
8	Variance of the saccade amplitudes	−0.37	0.60	0.17	0.96	0.17	0.88
9	Skewness of the saccade amplitudes	−0.44	0.59	0.24	0.85	0.11	0.86
10	Kurtosis of the saccade amplitudes	0.12	0.93	0.09	1.26	0.01	1.07
11	Average duration of saccades	0.15	1.07	0.08	1.22	−0.08	0.97
12	Variance of saccade durations	0.31	0.89	−0.36	0.69	−0.20	0.83
13	Skewness of saccade durations	0.33	1.03	−0.43	0.54	−0.24	0.77
14	Kurtosis of saccade durations	0.20	0.74	0.04	0.93	0.17	0.98
15	Average pupil diameter	0.85	0.83	−0.73	1.17	−0.43	0.83
16	Variance of the pupil diameter	−0.04	0.68	−0.31	0.69	0.11	1.04
17	Skewness of the pupil diameter	−0.06	0.66	−0.01	0.72	−0.35	1.06
18	Kurtosis of the pupil diameter	0.09	0.66	−0.13	0.81	−0.31	0.89