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Table 2 Frequency of adverse effect

From: The effect of high-definition transcranial direct current stimulation intensity on motor performance in healthy adults: a randomized controlled trial

Symptom

HD-tDCS 2 mA (n = 19)

HD-tDCS 1.5 mA (n = 20)

HD-tDCS sham (n = 19)

Tingling

17 (90%)

12 (60%)

15 (79%)

Burning sensation

6 (32%)

9 (45%)

8 (42%)

Itching

4 (21%)

9 (45%)

6 (32%)

Hair pulling

1 (5%)

 

1 (5%)

Irritating

 

1 (5%)

1 (5%)

  1. HD-tDCS 2 mA/1.5 mA high-definition transcranial direct current stimulation with an intensity of 2 mA/1.5 mA