Table 3.
Reading duration, HRV, eye-tracking, and EDA parameters in non-dyslexic and dyslexic children across all colours together (18 × 13 colours = 234 readings); significant p values are marked in bold. In Table 3, all the colours were averaged together and compared between the two groups on each measure.
| Parameters | Reading | p Value * | |
|---|---|---|---|
| Non-Dyslexic (n = 18 × 13) | Dyslexic (n = 18 × 13) | ||
| Reading duration | |||
| RD (s) | 21.63 ± 15.30 | 49.20 ± 29.81 | <0.001 |
| EEG parameters (relative band power) | |||
| Alpha | 2.5 ± 12.2 | 1.8 ± 11.4 | 0.529 |
| Beta | −0.9 ± 16.5 | 5.1 ±27.5 | 0.005 |
| Delta | 5.9 ± 38.1 | 9.1± 47.5 | 0.415 |
| Theta | 2.7± 15.0 | 2.2± 16.4 | 0.735 |
| Broadband | 1.1 ± 29.1 | 6.2± 36.2 | 0.101 |
| Eye-tracking parameters | |||
| Fixation count | 27.20 ± 08.50 | 45.29 ± 29.59 | <0.001 |
| Fixation frequency (count/s) | 1.53 ± 0.54 | 1.15 ± 0.70 | <0.001 |
| Fixation duration total (s) | 20.16 ± 14.57 | 43.57 ± 27.02 | <0.001 |
| Fixation duration average (ms) | 697.20 ± 297.21 | 1108.41 ± 786.90 | <0.001 |
| Saccade count | 24.33 ± 7.85 | 35.63 ± 23.65 | <0.001 |
| Saccade frequency (count/s) | 1.37 ± 0.52 | 0.97 ± 0.69 | <0.001 |
| Saccade duration total (ms) | 517.22 ± 189.82 | 1122.51 ± 1514.83 | <0.001 |
| Saccade duration average (ms) | 21.34 ± 3.51 | 27.82 ± 12.11 | <0.001 |
| EDA value | |||
| EDA (μS) | 8.86± 3.77 | 6.30 ± 2.36 | <0.001 |
| HRV parameters | |||
| Mean RR (ms) | 652.47± 96.37 | 690.61 ± 75.06 | <0.001 |
| STD RR (ms) | 44.79 ± 37.31 | 47.49 ± 20.25 | 0.331 |
| Mean HR (beats/min) | 93.54 ± 11.94 | 87.89 ± 9.47 | <0.001 |
| STD HR (beats/min) | 5.70 ± 3.07 | 5.96 ± 2.09 | 0.283 |
| RMSSD (ms) | 54.21 ± 48.26 | 56.71 ± 31.06 | 0.001 |
| CVRR=SDRR/MeanRR (ms) | 0.07 ± 0.04 | 0.08 ± 0.02 | <0.001 |
* Independent sample t test. Results are presented as mean ± standard deviation.