Table 1 Manipulation checks

Pre-anodal tDCS

 RT (ms)

468.85 ± 24.12

399.68 ± 30.35

467.05 ± 12.82

403.66 ± 15.86

 RA (%)

89 ± 2

83 ± 3

93 ± 1

83 ± 2

 Pain ratings (0–100)

–

–

36.20 ± 2.02

32.59 ± 2.24

29.76 ± 2.24

 Pain-related anxiety (0–100)

–

–

19.89 ± 3.35

17.31 ± 2.92

20.50 ± 3.49

 NFR (Z score)

–

–

0.24 ± 0.11

0.06 ± 0.07

0.19 ± 0.10

Pre-Sham tDCS

 RT (ms)

473.29 ± 26.44

415.85 ± 27.06

–

453.18 ± 10.19

410.28 ± 17.47

 RA (%)

89 ± 2

82 ± 2

–

94 ± 1

83 ± 2

 Pain ratings (0–100)

–

–

36.03 ± 2.02

31.83 ± 2.48

29.76 ± 2.24

 Pain-related anxiety (0–100)

–

–

18.26 ± 3.35

14.60 ± 2.80

16.19 ± 2.99

 NFR (Z-score)

–

–

0.43 ± 0.09

− 0.04 ± 0.06

0.10 ± 0.08