Table 2.
Summary of resting-state functional connectivity results from the functional magnetic resonance imaging (fMRI) studies.
| Reference | Significant changes in primary clinical outcome? | rsFC changes correlated with primary clinical outcome? | Montage placement | Brain regions reported significant rsFC differences (t-test FWE corrected P < .05) between active and sham tDCS (classified in terms of resting-state network and direction of effect) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Visual | Somatomotor | Dorsal attention | Ventral attention | Limbic | Frontoparietal | Default | ||||||||||||
| Anode | Cathode | A > S | S > A | A > S | S > A | A > S | S > A | A > S | S > A | A > S | S > A | A > S | S > A | A > S | S > A | |||
| Lefebvre et al59 | Yes | Yes | Ipsi-lesional M1 | Contra-lesional M1 | L/R PMC | L/R ACC | ||||||||||||
| Marangolo et al62 | Yes | Yes | Ipsi-lesional IFG | Contra-lesional IFG | L/R PMC cerebllm | R SMA, L MFG, cerebllm | L ACC, L Precuneus, R MPFC | |||||||||||
| Ficek et al56 | Yes | Yes | L IFG | R cheek | L MFG | L MTG | ||||||||||||
| Mondino et al51 | Yes | Yes | L DLPFC | L Temporo-parietal junction | R IFG, insula | L AG, precuneus | ||||||||||||
| L DLPFC | ||||||||||||||||||
| Neeb et al50 | Yes | n.r. | L/R M1 | L/R supra-orbital region | L/R FG | L/R post-CG | L/R insula | R ACC, L/R PCC, L MTG | ||||||||||
| Palm et al27 | Yes | No | L DLPFC | R supra-orbital region | L MTG | |||||||||||||
| Sotnikova et al57 | Yes | n.r. | L DLPFC | Cz | L/R MFG | R AG, ACC, L ITG | ||||||||||||
| Shahbabaie et al53 | Yes | Yes | R DLPFC | L DLPFC | R insula, L IFG | L/R LG, R precuneus, L MTG, R PCC, L/R MPFC, L/R ACC, L/R OFC | ||||||||||||
Abbreviations: A, active tDCS; ACC, anterior cingulate cortex; AG, angular gyrus; cerebllm, cerebellum; Cz, labelling in the EEG 10 to 20 system; DLPFC, dorsolateral prefrontal cortex; FG, fusiform gyrus; FEW, family-wise error; IFG, inferior frontal gyrus; ITG, inferior temporal gyrus; L, left; M1, primary motor cortex; MFG, middle frontal gyrus; MPFC, medial prefrontal gyrus; MTG, middle temporal gyrus; n.r., not reported; PCC, posterior cingulate cortex; PMC, premotor cortex; post-CG, postcentral gyrus; R, right; rsFC, resting state functional connectivity; S, sham tDCS; SFG, superior frontal gyrus.