Table 3.

Significant Main Effects of Drug Use and Gender from the Checkerboard Task.

Brain Region	BA	Side	Z Score	Cluster Size	Cluster P	MNI Coordinates
						x	y	z
Cannabis Users < Controls
2 Hz
Lingual Gyrus	17	Left	15.5	1434	0.007	−12	−104	−1
Cuneus	18	Left	7.99	1434	0.007	6	−96	8
4 Hz
Postcentral Gyrus	3	Right	17.7	7311	2.55e-10	50	−12	64
Precentral Gyrus	4 6	Right Right	12.1 10.9	7311 7311	2.55e-10 2.55e-10	36 46	−18 −24	54 70
Lingual Gyrus	17 18	Left Left	15.2 15.0	14646 14646	1.29e-16 1.29e-16	−16 −12	−108 −104	−6 0
Cannabis Users > Controls
2 Hz
Superior Frontal Gyrus	6	Right	11.2	63963	1.9e-39	2	18	50
4 Hz
Postcentral Gyrus	2	Left	8.12	1597	0.002	−62	−26	−6
Middle Frontal Gyrus	6 26	Left Right	8.41 8.64	5298 1597	2.9e-08 .002	−38 46	10 48	44 −6
Superior Parietal Lobe	7	Right	6.51	1216	0.007	32	−46	64
Frontal Pole	10	Right	6.3	1597	0.002	26	62	−26
Females > Males
2 Hz
Cuneus	17	Right	15.9	1727	.003	10	−108	4
4 Hz
Postcentral Gyrus	2 3	Right Right	11.4 10.9	7192 7192	2.99e-10 2.99e-10	40 50	−18 −20	44 52
Precentral Gyrus	4	Right	16.4	7192	2.99e-10	34	−20	56
Male > Females
2 Hz
Cuneus	18	Left	15.2	41459	4.12e-29	0	−108	6
Lingual Gyrus	17 18	Left Left	12.0 14.4	41459 23186	4.12e-29 8.29e-23	20 −18	−100 −90	−4 −6
4 Hz
Lingual Gyrus	18	Left	14.4	23186	8.29e-23	−18	−90	−6
Fusiform Gyrus	19	Left	13.6	23186	8.29e-23	−34	−84	−10