Table 4.
Scores of Desire for Drug Questionnaire (DDQ) subscales during right anode/left cathode and right cathode/left anode in comparison to sham transcranial direct current stimulation (tDCS) among crystalline heroin users (n = 40)
| DDQ subscales | Right anode tDCS |
P | Right cathode tDCS |
P | ||
|---|---|---|---|---|---|---|
| Before stimulation (mean ± SD) | After stimulation (mean ± SD) | Before stimulation (mean ± SD) | After stimulation (mean ± SD) | |||
| Desire and intention | 10.800 ± 1.735 | 9.550 ± 1.356 | 0.001* | 11.800 ± 1.673 | 11.750 ± 1.713 | 0.974 |
| Negative reinforcement | 10.650 ± 4.030 | 8.200 ± 3.503 | 0.001* | 7.000 ± 3.356 | 7.700 ± 3.213 | 0.283 |
| Deficit of control | 5.700 ± 2.866 | 4.500 ± 2.503 | 0.006* | 6.400 ± 2.186 | 6.050 ± 2.235 | 0.177 |
DDQ: Desire for Drug Questionnaire; tDCS: Transcranial direct current stimulation; SD: Standard deviation
*
Denotes a statistically significant difference