Skip to main content

Table 3 Mean values and changes of eye movement features in the main experiment

From: Assessment of eye fatigue caused by head-mounted displays using eye-tracking

Eye movement features1st measurement2nd measurement3rd measurement4th measurement
Number of fixation points\(43.12\pm 7.97\)\({ 39.50}\pm { 8.20}\)\({ 35.62}\pm { 8.98}\)\({ 30.19}\pm { 9.61}\)
Total duration of fixation points (s)\(16.97\pm 0.56\)\(16.88\pm 0.87\)\({ 16.72}\pm { 1.08}\)\({ 16.05}\pm { 1.75}\)
Mean duration of fixation points (s)\(0.41\pm 0.12\)\({ 0.46}\pm { 0.15}\)\({ 0.53}\pm { 0.29}\)\({ 0.67}\pm { 0.57}\)
Variance of fixation durations (\(s^{2}\))\(0.08\pm 0.06\)\({ 0.13}\pm { 0.09}\)\({ 0.40}\pm { 0.31}\)\({ 0.91}\pm { 0.63}\)
Times of blinking\(2.57\pm 2.44\)\(4.65\pm 3.51\)\({ 6.79}\pm { 4.50}\)\({ 10.21}\pm { 6.18}\)
Total duration of blinking (s)\(0.49\pm 0.49\)\(0.95\pm 0.77\)\({ 1.48}\pm { 1.05}\)\({ 2.55}\pm { 1.73}\)
Mean duration of blinking (s)\(0.16\pm 0.07\)\(0.20\pm 0.03\)\(0.21\pm 0.04\)\(0.25\pm 0.07\)
Variance of blink durations (\(s^{2}\))\(4.01\hbox {E-}04\pm 3.05\hbox {E-}04\)\({ 1.13E-03}\pm { 1.06E-03}\)\({ 2.71E-03}\pm { 2.16E-03}\)\({ 1.06E-02}\pm { 0.87E-02}\)
Length of scanpath (pixel)\(6002.49\pm 3994.3\)\({ 8387.62}\pm { 4824.81}\)\({ 11109.34}\pm { 6576.00}\)\({ 16063.95}\pm { 8713.61}\)
Mean of saccade length (pixel)\(137.11\pm 84.5\)\({ 209.91}\pm { 110.03}\)\({ 331.59}\pm { 255.29}\)\({ 619.30}\pm { 500.48}\)
  1. Values of indicators were shown as mean ± standard deviation (SD).
  2. Compared with 1st measurement, \(\hbox {P}<0.05\) were characterized in italics
  3. Data were recorded during 20 s