Table 1.
Clinical characteristics of the six groups of participants examined.
Figure 1.
Stimuli used for the reading (A, B and C) and visual search (D, E and F) tasks for each group of children children: age 6–9; 10–12, and 13 and more respectively.
Table 2.
Percentage of the number of ‘r’s counted in the visual search task, by the six groups of participants tested, and post-hoc comparisons by groups.
Figure 2.
Number of progressive saccades during reading (A), visual search (C) and number of regressive saccades during reading (B) and visual search (D).
Lines represent the corresponding regressions. Dotted lines represent the regressions for children (from 6 to 15 years old) only, 2A: R2 = 0.53, p<0.0001; 2B: R2 = 0.13, p<0.003; 2C: R2 = 0.009, p = 0.45; 2D: R2 = 0.003; p = 0.67.
Figure 3.
Amplitude of progressive saccades during reading (A), visual search (C) and amplitude of regressive saccades during reading (B) and visual search (D).
Lines represent the corresponding regressions. Dotted lines represent the regressions for children only (from 6 to 15 years old), 2A: R2 = 0.65, p<0.0001; 2B: R2 = 0.04, p = 0.10; 2C: R2 = 0.08, p<0.02; 2D: R2 = 0.0001; p = 0.94.
Figure 4.
Duration of fixations during reading (A) and during visual search (B) and task duration in reading (C) and visual search (D).
Lines represent the corresponding regressions. Dotted lines represent the regressions for children only (from 6 to 15 years old), 2A: R2 = 0.51, p<0.0001; 2B: R2 = 0.48, p<0.0001; 2C: R2 = 0.45, p<0.0001; 2D: R2 = 0.45; p<0.001.
Figure 5.
Saccadic disconjugacy of progressive saccades in the reading (A) and visual search tasks (C) and disconjugacy during the regressive saccades in the reading (B) and visual search tasks (D).
Lines represent the corresponding regressions. Dotted lines represent the regressions for children only (from 6 to 15 years old), 2A: R2 = 0.11, p<0.006; 2B: R2 = 0.006, p = 0.53; 2C: R2 = 0.07, p<0.03; 2D: R2 = 0.007; p = 0.50.
Figure 6.
Mean value of post-saccadic fixation disconjugacy during reading (A) and visual search (B).
Lines represent the corresponding regressions. Dotted lines represent the regressions for children only (from 6 to 15 years old), 2A: R2 = 0.13, p<0.003; 2B: R2 = 0.09, p<0.02.
Figure 7.
Correlations between saccadic disconjugacy and post-saccadic fixation disconjugacy for each saccade analyzed.
Figure 8.
Comparisons of reading and visual search task for the six groups of participants tested on: number of progressive saccades (A), number of regressive saccades (B), amplitude of progressive saccades (C) and duration of fixations (D).
Vertical lines indicate the standard error. Asterisks indicate that value is significantly different between reading and visual search task.