Table 2.
Subjective experiences reported by participants after the day 5 active or sham tRNS session.
| Mild | Moderate | ||
|---|---|---|---|
| Headache | |||
| Active (N = 9) | 1 | 4 | |
| Sham (N = 8) | 2 | 0 | |
| Neck pain | |||
| Active (N = 9) | 2 | 0 | |
| Sham (N = 8) | 1 | 0 | |
| Scalp pain | |||
| Active (N = 9) | 1 | 0 | |
| Sham (N = 8) | 0 | 0 | |
| Tingling sensation | |||
| Active (N = 9) | 4 | 3 | |
| Sham (N = 8) | 6 | 1 | |
| Itching | |||
| Active (N = 9) | 4 | 2 | |
| Sham (N = 8) | 5 | 0 | |
| Burning sensation | |||
| Active (N = 9) | 2 | 3 | |
| Sham (N = 8) | 1 | 0 | |
| Sleepiness | |||
| Active (N = 9) | 2 | 1 | |
| Sham (N = 8) | 3 | 2 | |
| Trouble concentrating | |||
| Active (N = 9) | 0 | 0 | |
| Sham (N = 8) | 1 | 0 | |
| Acute mood change | |||
| Active (N = 9) | 0 | 0 | |
| Sham (N = 8) | 1 | 0 | |
| Others | Jaw stiffness | Neck tension | |
| Active (N = 9) | 1 | 1 | |
| Sham (N = 8) | 0 | 0 | |
| Any of the symptoms related to tES | Remote | Probable | Definite |
| Active (N = 9) | 0 | 3 | 6 |
| Sham (N = 8) | 2 | 0 | 6 |
No participants reported severe experiences. There were no statistically significant between group differences.