Table 2.
The results of the Theta waves examination (waves from C3, C4 channels).
| Mode | Pre-COVID | Post-COVID | p | |
|---|---|---|---|---|
| C3, eyes open | mean ± SD | 8.29 ± 0.59 | 8.55 ± 1.52 | p = 0.452 |
| Median | 8.36 | 9.06 | ||
| Quartiles | 7.7–8.78 | 7.02–9.87 | ||
| C4, eyes open | mean ± SD | 8.49 ± 0.32 | 10.54 ± 1.93 | p = 0.001 * |
| Median | 8.46 | 10.88 | ||
| Quartiles | 8.32–8.69 | 8.25–12.52 | ||
| C3, eyes closed | mean ± SD | 7.59 ± 0.41 | 9.55 ± 0.98 | p < 0.001 * |
| Median | 7.54 | 9.86 | ||
| Quartiles | 7.34–7.7 | 9.13–10.29 | ||
| C4, eyes closed | mean ± SD | 7.89 ± 0.75 | 11.04 ± 1.41 | p < 0.001 * |
| Median | 7.94 | 11.12 | ||
| Quartiles | 7.6–8.43 | 10.4–12.52 | ||
p-Wilcoxon paired test. * statistically significant (p < 0.05).