Table 3.
[11C]raclopride binding potential ratio in clusters
| Raclopride BPR, mean (±SD) | |||||
|---|---|---|---|---|---|
| Cluster volume (mm3)/tDCS group | Condition 1 | Condition 2 | Relative variation, % | Difference Active—Sham Group | |
| Right caudate nucleus | |||||
| 272 | Baseline | Stimulation + Post1 + Post2 | −22.46 | ||
| Active tDCS | 5.78 (±0.88) | 4.89 (±1.40) | −15.05 (±9.47) | ||
| Sham tDCS | 4.93 (±1.01) | 5.23 (±1.48) | 7.41 (±14.79) | ||
| 352 | Baseline | Post1 + Post2 | −25.36 | ||
| Active tDCS | 5.66 (±0.83) | 4.55 (±1.28) | −19.05 (±9.86) | ||
| Sham tDCS | 4.78 (±0.91) | 5.02 (±1.39) | 6.31 (±15.57) | ||
| 144 | Stimulation | Post1 + Post2 | −20.33 | ||
| Active tDCS | 4.77 (±1.19) | 4.18 (±1.74) | −11.73 (±21.18) | ||
| Sham tDCS | 4.46 (±1.49) | 4.84 (±2.05) | 8.60 (±15.48) | ||
| 144 | Stimulation | Post1 | −33.82 | ||
| Active tDCS | 3.99 (±1.30) | 3.39 (±1.43) | −13.34 (±18.71) | ||
| Sham tDCS | 3.35 (±1.09) | 3.94 (±1.57) | 20.48 (±26.03) | ||
| 360 | Baseline | Post2 | −31.97 | ||
| Active tDCS | 5.64 (±0.92) | 4.31 (±1.36) | −23.32 (±12.03) | ||
| Sham tDCS | 4.82 (±0.89) | 5.16 (±1.55) | 8.65 (±19.90) | ||
| 128 | Stimulation | Post2 | −29.32 | ||
| Active tDCS | 5.64 (±1.47) | 4.52 (±2.04) | −19.02 (±25.83) | ||
| Sham tDCS | 5.00 (±1.62) | 5.47 (±2.45) | 10.30 (±22.03) | ||
| Left putamen | |||||
| 160 | Stimulation | Post1 + Post2 | −16.49 | ||
| Active tDCS | 7.91 (±2.13) | 6.58 (±2.00) | −13.89 (±18.07) | ||
| Sham tDCS | 6.81 (±2.03) | 6.80 (±1.88) | 2.60 (±19.96) | ||
| 192 | Stimulation | Post1 | −13.99 | ||
| Active tDCS | 6.86 (±1.53) | 5.78 (±1.52) | −13.99 (±21.78) | ||
| Sham tDCS | 6.04 (±1.39) | 6.00 (±1.55) | −0.00 (±18.03) | ||
| 128 | Baseline | Post2 | −25.9 | ||
| Active tDCS | 4.89 (±0.94) | 4.44 (±2.13) | −6.95 (±25.21) | ||
| Sham tDCS | 4.43 (±0.86) | 5.28 (±2.10) | 18.95 (±23.71) | ||
[11C]raclopride binding potential in clusters revealed by the parametric analysis—BPR variations during and after the stimulation compared with baseline (relative variation, %). The anatomical subparts of the striatum (i.e., caudate nucleus, putamen, and nucleus accumbens) were named based on the Hammersmith maximum probability brain atlas.