Table 1.

The 13 ROIs in which the level of brain activity yielded a significant correlation with symptom severity across ADHD individuals. The columns from left to right indicate specific Z value by individual contrast (I, N, C vs. fixation baseline) and average Z score for task activation across all conditions in the average parametric map, the MNI coordinates for the peak of activation in the average parametric map, the correlation coefficient of activity in that region with the severity of inattentive symptoms (Inatt r), Bonferroni corrected probability scores for that correlation (Inatt P), the significance of an unpaired t-test comparing the percentage signal change between ADHD and control individuals for the relevant ROI (Signal P), and significance of a Levene’s test to examine whether the variance across members of the ADHD in percent signal change was significantly greater than across members of the control group for the given ROI (Lev P).

Region	INC	CON	NEU	Avg	x	y	z	Inatten r	Inatten P	Signal P	Levene P
lMFG	2.83	2.65	2.63	2.70	−34	6	58	−0.63	<0.001	0.42	0.007
rMFG	3.34	2.72	2.74	2.93	32	7	41	−0.51	<0.01	0.71	0.006
lPuta	2.84	2.67	2.66	2.72	−16	13	−8	−0.5	<0.01	0.95	0.11
rPuta	2.72	2.62	2.62	2.65	20	13	−6	−0.52	<0.01	0.15	0.07
lAccu	2.71	3.12	3.05	2.96	−13	6	−11	−0.52	<0.01	0.31	0.04
rAccu	2.73	2.71	2.62	2.69	18	6	−12	−0.53	<0.01	0.49	0.02
lITG	3.16	3.04	2.93	3.04	−54	−44	−18	−0.55	<0.01	0.94	0.01
rITG	3.24	3.08	2.97	3.10	60	−42	−20	−0.51	<0.01	0.98	0.004
Cereb	2.81	3.12	3.53	3.15	42	−72	−26	−0.71	<0.0001	0.91	0.02
Thal	2.96	2.72	2.83	2.84	6	−13	9	−0.64	<0.001	0.66	0.01
rLIP	3.32	3.43	3.41	3.39	34	−56	28	−0.68	<0.001	0.51	0.0001
rIFG	3.33	2.85	2.94	3.04	52	42	16	−0.51	<0.01	0.47	0.01
mOFC	3.02	3.26	3.21	3.16	−6	30	−14	−0.64	<0.001	0.46	0.03