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Frequency of adverse effect ratings and correct/incorrect guessing for each stimulation condition.
| tACS | tDCS | Sham | |
|---|---|---|---|
| Headache | 1 | 2 | 1 |
| Neck ache | 1 | 0 | 1 |
| Scalp ache | 0 | 2 | 1 |
| Tingling | 6 | 11 | 5 |
| Itching | 2 | 11 | 7 |
| Erythema | 7 | 12 | 8 |
| Burning | 5 | 8 | 4 |
| Fatigue | 7 | 5 | 4 |
| Loss of concentration | 6 | 3 | 4 |
| Correct guess | 18 | 21 | 14 |
| Incorrect guess | 9 | 6 | 12 |
Note: rating sums are shown. tACS, transcranial alternating current stimulation; tDCS, transcranial direct current stimulation; Sham, control condition.
