Table 3.
The values for the mean reaction times and the statistics (Kruskal–Wallis test) for each run of the task, the trials with and without a signal tone, and the t-values of phasic alertness
| Kruskal – Wallis test | ||||||
|---|---|---|---|---|---|---|
| df | p-value | Chi-squared values | Mean – ATD | Mean – PTD | Mean – BAL | |
| t-values for phasic alertness | 2, 47 | 0.8 | 0.73 | 0.03±0.07 | 0.01±0.05 | 0.04±0.08 |
| Reaction times run 1 | 2, 47 | 0.4 | 1.84 | 240.69±28.23 | 228.06±25.84 | 234.41±33.61 |
| Reaction times run 2 | 2, 47 | 0.77 | 0.52 | 234.56±26.03 | 230.76±25.74 | 229.29±25.13 |
| Reaction times run 3 | 2, 47 | 0.39 | 1.88 | 238.38±27.46 | 228.41±22.97 | 224.88±22.1 |
| Reaction times run 4 | 2, 47 | 0.49 | 1.43 | 249.06±34.36 | 236.12±30.65 | 240.29±27.9 |
| Reaction times without a signal tone | 2, 47 | 0.39 | 1.86 | 245.63±30.02 | 232.35±26.74 | 237.35±27.47 |
| Reaction times with a signal tone | 2, 47 | 0.57 | 1.12 | 236.06±25.35 | 229.29±22.56 | 226.82±20.8 |