Table 4 VAS self-report differences before and after experimental protocol.

From: The effects of direct current stimulation and random noise stimulation on attention networks

Stimulation

Dimensions

Before (N = 24)

Mean (SD)

After (N = 24)

Mean (SD)

t (23)

Sham

Itching

0.39 (1.03)

1.17 (1.53)

2.27*

Tingling

0.00 (0.00)

0.35 (0.65)

2.58*

a-tDCS

Itching

0.58 (1.38)

2.21 (2.57)

3.49**

Tingling

0.08 (0.28)

0.79 (1.41)

2.38*

Headache

0.46 (1.06)

0.75 (1.11)

2.07+

tRNS

Itching

0.25 (0.85)

0.88 (1.65)

1.97+

Headache

0.63 (1.38)

1.17 (2.06)

2.18*

  1. Visual analogue scale (VAS). We only report symptoms that present a statistically significant increase between before and after the sessions (all symptoms assessed: tiredness, anxiety, sadness, agitation, sleepiness, itching, headache, pain, tingling and metallic flavor).
  2. +p < 0.10, *p < 0.05, **p < 0.01, *p < 0.001.
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