. 2016 Mar 1;10:50. doi: 10.3389/fnins.2016.00050

Table 3.

Stimulus-locked ERP amplitudes.

	Controls	ADHD	TS	Repeated Measure ANOVA			ANCOVA
Stimulus-locked	Mean ±SD (μV)	Mean ±SD (μV)	Mean ±SD (μV)	Outcome	Group	Outcome x Group	Group	Covariates
N1 (108 ms)
Compatible	−2.72±0.70	−3.04±0.65	−2.42±0.75	F_{(2, 192)} = 1.89, n.s.	F_{(2, 96)} = 0.22, n.s.	F_{(4, 192)} = 0.43, n.s.	F_{(2, 91)} = 0.19, n.s.	RT $F_{(1, 91)} = 5.95, p = 0.02, η_{p}^{2} = 0.06$ ;IIV $F_{(1, 91)} = 7.06, p < 0.01, η_{p}^{2} = 0.07$
Incompatible	−2.49±0.68	−3.47±0.63	−2.36±0.73				F_{(2, 91)} = 0.74, n.s.
Error	−3.07±0.90	−4.03±0.84	−2.79±0.97				F_{(2, 91)} = 0.5, n.s.
Mean	−2.80±0.69	−3.44±0.65	−2.57±0.75
P2 (196 ms)
Compatible	7.19 ± 0.91	7.05 ± 0.84	6.36 ± 0.96	$F_{(2, 192)} = 2.69, p = 0.06, η_{p}^{2} = 0.03$	F_{(2, 96)} = 0.21, n.s.	F_{(4, 192)} = 0.35, n.s.	F_{(2, 91)} = 0.23, n.s.
Incompatible	7.23 ± 0.98	6.73 ± 0.92	6.33 ± 1.05				F_{(2, 91)} = 0.19, n.s.
Error	6.53 ± 1.06	5.82 ± 0.99	5.99 ± 1.13				F_{(2, 91)} = 0.11, n.s.
Mean	6.89 ± 0.91	6.64 ± 0.85	6.19 ± 0.97
P3 (320 ms)
Compatible	5.26 ± 1.04	4.70 ± 0.93	8.69 ± 1.07	$F_{(2, 192)} = 11.71, p < 0.001, η_{p}^{2} = 0.11$	$F_{(2, 96)} = 3.61, p = 0.03, η_{p}^{2} = 0.07$	$F_{(4, 192)} = 2.21, p = 0.06, η_{p}^{2} = 0.04$	$F_{(2, 91)} = 4.62, p = 0.01, η_{p}^{2} = 0.09$	RACC $F_{(1, 91)} = 4.43, p = 0.04, η_{p}^{2} = 0.05$ ; IIV $F_{(1, 91)} = 5.21, p = 0.03, η_{p}^{2} = 0.05$
Incompatible	4.60 ± 1.03	4.46 ± 0.97	7.61 ± 1.12				F $_{(2, 91)} = 2.82, p = 0.06, η_{p}^{2} = 0.06$
Error	2.84 ± 1.15	2.89 ± 1.07	7.47 ± 1.23				$F_{(2, 91)} = 5.17, p < 0.01, η_{p}^{2} = 0.10$
Mean	4.09 ± 0.99	4.22 ± 0.93	7.81 ± 1.06
LPC (598 ms)
Compatible	7.12 ± 0.96	7.78 ± 0.89	8.46 ± 1.02	$F_{(2, 192)} = 14.35, p < 0.001, η_{p}^{2} = 0.13$	F_{(2, 192)} = 0.61, n.s.	F_{(4, 192)} = 0.48, n.s.	F_{(2, 91)} = 0.45, n.s.	RACC $F_{(1, 91)} = 3.96, p = 0.05, η_{p}^{2} = 0.04$
Incompatible	8.11 ± 1.03	8.89 ± 0.96	10.86 ± 1.11				F_{(2, 91)} = 1.79, n.s.	IIV $F_{(1, 91)} = 9.01, p < 0.01, η_{p}^{2} = 0.09$
Error	5.95 ± 1.39	5.73 ± 1.31	8.13 ± 1.50				F_{(2, 91)} = 0.88, n.s.
Mean	6.83 ± 1.00	7.72 ± 0.94	9.07 ± 1.08

ERP, event-related potentials; SD, standard deviation; ANOVA, analysis of variance; ADHD, attention-deficit/hyperactivity disorder; TS, Tourette syndrome; LPC, Late positive component; n.s., not significant.