. 2020 Dec 15;12:1179573520976832. doi: 10.1177/1179573520976832

Table 3.

Summary of resting-state functional connectivity results from the electroencephalography (EEG) studies.

Reference	Significant changes in primary clinical outcome?	rsFC changes correlated with primary clinical outcome?	Montage placement		Between-group contrast in rsFC
Reference	Significant changes in primary clinical outcome?	rsFC changes correlated with primary clinical outcome?	Anode	Cathode	Delta	Theta	Alpha	Beta	Gamma
Nicolo et al⁶⁰	No	No	Ipsilesional supraorbital region	Contralesional M1	n.r.	n.r.	Weighted node degree of M1: n.s.	Weighted node degree of M1: A > S (t₂₄ = 2.78, P = .01)	n.r.
De Ridder and Vanneste⁴⁹	Yes	Yes	L occipital lobe	R occipital lobe	n.s.	n.s.	n.s.	A > S (t-value n.r.; P < .05)	A > S (t-value n.r.; P < .05)
Cosmo et al⁵⁸	N/A	N/A	L DLPFC	R DLPFC	Whole-brain weighted node degree: n.s. (U = 319.00; P = .92)
Porcaro et al⁵⁴	Yes	Yes	Primary sensory cortex	Occipital lobe	Treatment (pre,post) × condition (real,sham): F(1,11) = 13.235, P = .004
Porcaro et al⁵⁴	Yes	Yes	Primary sensory cortex	Occipital lobe	Post-hoc t-test: increase of FC between L and R M1 was significant (P = .0002), while remained non-significant for sham (P = .274)
Schoellmann et al⁵⁵	Yes	n.r.	L primary motor cortex	R supraorbital region	n.r.	n.r.	n.r.	n.s. (t-value n.r.; P > .05)	n.r
Thibaut et al⁶¹	Yes	n.r.	Bilateral DLPFC	Bilateral M1	n.s.	n.s.	n.s.	A > S; C3 to C4 (t₂₇ = 2.56, P = .02)	n.r.
Thibaut et al⁶¹	Yes	n.r.	Bilateral DLPFC	Bilateral M1	n.s.	n.s.	n.s.	A > S; C4 to F3 (t₂₇ = 2.30, P = .04)	n.r.
Wu et al⁶³	No	n.r.	L DLPFC	R supraorbital region	A > S (t-value n.r.; P < .05)
Wu et al⁶³	No	n.r.	R DLPFC	L supraorbital region	n.s.

Abbreviations: A, active-tDCS; DLPFC, dorsolateral prefrontal cortex; F3, labeling in the EEG 10 to 20 system; L, left; M1, primary motor cortex; n.r., not reported; n.s., non-significant; N/A, not applicable; R, right; rsFC, resting state functional connectivity; S, Sham-tDCS.