| Active (n = 33) | Sham (n = 33) | p-value | Statistics |
---|---|---|---|---|
Participant demographics | ||||
 Age (years; mean [SD]) | 22.7 (1.33) | 22.8 (2.07) | 0.83 | t = − 0.21 |
Sex |  |  | 0.62 | χ2 = 0.24 |
 Male (n (%)) | 17 (51.5) | 15 (45.5) |  |  |
 Female (n (%)) | 16 (48.5) | 18 (54.5) |  |  |
 Edinburgh Handedness Inventory mean (SD) | 97.52 (6.80) | 97.91 (5.53) | 0.80 | t = − 0.26 |
 Blinding |  |  | 0.22 | χ2 = 1.54 |
 Felt stimulated (n (%)) | 17 (51.5) | 12 (36.3) |  |  |
 Felt non-stimulated (n (%)) | 16 (48.5) | 21 (63.7) |  |  |
Sensation questionnaire (Median [IQR]) | ||||
 Itching | 1.0 (0.0–1.0) | 1.0 (0.0–1.0) | 0.30 | χ2 = 2.43 |
 Pain | 0.0 (0.0–0.0) | 0.0 (0.0–0.5) | 0.56 | χ2 = 1.15 |
 Burning | 0.0 (0.0–0.0) | 0.0 (0.0–0.0) | 0.39 | χ2 = 0.73 |
 Warmth/Heat | 0.0 (0.0–0.5) | 0.0 (0.0–0.0) | 0.55 | χ2 = 0.36 |
 Pinching | 0.0 | 0.0 | N/A | N/A |
 Metallic | 0.0 | 0.0 | N/A | N/A |
 Fatigue | 0.0 (0.0–0.5) | 0.0 (0.0–1.0) | 0.73 | χ2 = 0.64 |
 Others | 0.0 (0.0–0.0) | 0.0 (0.0–0.0) | 0.54 | χ2 = 1.22 |