Table 1.

tDCS studies for addictiontable

Publication	Addiction	Concurrent Treatment	n	Target	Anode	Cathode	Current density mA/cm	No. Sessions	Objective Outcome Measure	Primary Outcome Measure	Mean % change
Boggio et al. 2009	nicotine	NR	27	DLPFC	F3, 35 cms2	F4, 100 cms2	0.06	5	no	Cue-elicited craving	NI
											At last session: Active: 2.6
											Sham = 4.18
											SD
Fecteau et al. 2014	nicotine	NR	12	DLPFC	F4, 35 cms2	F3, 35cms2	0.06	5	Expired CO2, ultimatum game and risk task	Expired CO2	NI
											NS
da Silva et al. 2013	alcohol	Yes	13	DLPFC	F3, 35 cms2	R supradeltoid, 35 cms2	0.06	5	ERPs to alcohol and neutral cue exposure with LORETA	Relapse	Active: 67% RE
											Sham: 14% RE
											NS
Klauss et al. 2014	alcohol	Yes	35	DLPFC	F4, 35 cms2	F3, 35cms2	0.06	10 (2 per day)	FAB	Relapse	At last session: NI
											NS
											Relapse at 6 months
											Active: 50% RE
											Sham: 88% RE
											SD
Conti and Nakamura-Palacios 2014	crack cocaine	NR	13	DLPFC	F4, 35 cms2	F3, 35cms2	0.06	5	ERPs to cue exposure with LORETA	N2 component in ACC during crack pics	NI
											SD
Batista et al. 2015	crack cocaine	NR	17 pts., 19 controls	DLPFC	F4, 35 cms2	F3, 35cms2	0.06	5	no (urine samples showed no use during study - in rehab)	Craving	NI
											SD
Ljubisavljevic et al. 2016	food	NR	27		F4, 35 cms2	L supraorbit, 35 cms2	0.06		no	Craving*	Active: 14%
										FCQ-T	Sham: 5%
											SD

NR, not reported; NI, pre and post mean data not included; SD, significantly different; NS, no significant difference found; DLPFC, dorsolateral prefrontal cortex; LORETA, low-resolution brain electromagnetic tomography; FAB, Frontal Assessment Battery; FCQ-T, Food Craving Questionnaire - Trait: *, primary outcome measure not specified; RE, relapse