Table 1.
Manipulation checks
| Measures | n-back task conditions | ||||
|---|---|---|---|---|---|
| 0-back | 2-back | Pain | 0-back with pain | 2-back with pain | |
| 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 |
Values in table are presented as the mean ± standard error of the mean
tDCS, Transcranial direct current stimulation; RT, response time; RA, response accuracy; NFR, nociceptive flexion reflex