Table 2.
The intensity of side effects was analyzed by one-way ANOVAs with the between subject factor electrode arrangement.
| Side effects | df | F-value | P-value | |
|---|---|---|---|---|
| During stimulation | Headache | 5, 84 | 0.581 | 0.714 |
| Vertigo | 5, 84 | 0.933 | 0.464 | |
| Tingling | 5, 84 | 2.714 | 0.025∗ | |
| Itching | 5, 84 | 1.84 | 0.114 | |
| Dizziness | 5, 84 | 0.545 | 0.742 | |
| Drowsiness | 5, 84 | 0.228 | 0.949 | |
| Nausea | 5, 84 | 0.8 | 0.553 | |
| After stimulation | Headache | 5, 84 | 0.974 | 0.438 |
| Vertigo | 5, 84 | 0.465 | 0.801 | |
| Tingling | 5, 84 | 1.232 | 0.301 | |
| Itching | 5, 84 | 1.354 | 0.25 | |
| Dizziness | 5, 84 | 0.671 | 0.646 | |
| Drowsiness | 5, 84 | 0.84 | 0.525 | |
| Nausea | 5, 84 | 1 | 0.423 | |
A significant effect of tingling, but no significant effect of other side effects was revealed. UM-L, monopolar unilateral-left anode; UM-R, monopolar unilateral-right anode; UBB-L, unbalanced bipolar bilateral-left anode; UBB-R, unbalanced bipolar bilateral-right anode; BBB-L, balanced bipolar bilateral-left anode; BBB-R, balanced bipolar bilateral-right anode; RT, reaction time. ∗α = 0.05.