Table 3.

ERP results. M and SD of ERP characteristics in ADHD patients and controls, results of ANOVAs and post-hoc t-tests between tDCS conditions (conventional vs. HD vs. sham) within ADHD patients.

	controls	ADHD patients			${\eta }_{\mathrm{p}}^2$	F	p	conv. vs. sham		HD vs. sham		conv. vs. HD
		conv.	HD	sham				t	p	t	p	t	p
N200 amplitude	2.35 μV (4.80 μV)	3.16 μV (2.07 μV)	3.02 μV (1.97 μV)	0.51 μV (2.21 μV)	0.455	7.51	0.004	2.98	0.016	3.20	0.011	0.23	0.821
N200 latency	191 ms (23 ms)	187 ms (27 ms)	181 ms (30 ms)	179 ms (22 ms)	0.024	0.22	0.804	0.67	0.518	0.15	0.882	0.45	0.666
P300 amplitude	13.87 μV (5.36 μV)	9.14 μV (5.74 μV)	9.75 μV (4.93 μV)	7.11 μV (3.74 μV)	0.497	8.91	0.002	2.58	0.030	5.04	0.001	−0.98	0.355
P300 latency	362 ms (39 ms)	350 ms (36 ms)	361 ms (47 ms)	356 ms (39 ms)	0.033	0.31	0.739	−0.49	0.636	0.38	0.713	−0.65	0.531