Table 2.
The statistical analysis results of P300 amplitude and latency of different levels of stimulation with the same stimulation mode.
| Mode | Parameter | Sample normality | Homogeneity of variance | Test method | Result |
|---|---|---|---|---|---|
| Mode 1 | P300 amplitude | Sample normality confirmed (p = 0.998, p = 0.067, p = 0.074) | Homogeneity of variance confirmed (p = 0.920) | One-way ANOVA (p = 0.295) | No significant difference |
| Mode 1 | P300 latency | Sample normality not confirmed (p = 0.048, p = 0.153, p = 0.311) | Null | Friedman test (p = 0.417) | No significant difference |
| Mode 2 | P300 amplitude | Sample normality confirmed (p = 0.206, p = 0.265, p = 0.612) | Homogeneity of variance confirmed (p = 0.944) | One-way ANOVA (p = 0.414) | No significant difference |
| Mode 2 | P300 latency | Sample normality not confirmed (p = 0.037, p = 0.739, p = 0.033) | Null | Friedman test (p = 0.197) | No significant difference |
| Mode 3 | P300 amplitude | Sample normality confirmed (p = 0.520, p = 0.959, p = 0.354) | Homogeneity of variance confirmed (p = 0.932) | One-way ANOVA (p = 0.867) | No significant difference |
| Mode 3 | P300 latency | Sample normality not confirmed (p = 0.196, p = 0.018, p = 0.626) | Null | Friedman test (p = 0.607) | No significant difference |