Table 2.

Somatosensory activation in controls and patients with callosal dysgenesis in response to unilateral tactile stimulation of the hands^a.

Region	Side	Brodmann area	Cluster size	LI	MNIb			Z-score
					x	y	z
Controls
Stimulation of Right Hand
S1	Left hemisphere	1	545	−0.70	−39	−34	64	21.97
	Right hemisphere	1	056		−57	−16	46	06.86
		1	039		−45	−34	52	04.42
S2	Left hemisphere	1	321	−0.51	−48	−22	16	10.84
	Right hemisphere	40	104		−54	−25	16	06.97
Stimulation of Left Hand
S1	Left hemisphere	40	051	−0.82	−54	−22	40	06.18
	Right hemisphere	1	508		−42	−28	64	25.24
S2	Left hemisphere	40	084	−0.36	−63	−25	22	06.00
		6/1	039		−48	−07	07	05.71
	Right hemisphere	40	259		−51	−22	22	09.16
Callosal Dysgenesis
Stimulation of Right Hand
S1	Left hemisphere	1	347	−1.00	−36	−34	67	14.96
		4/1	015		−63	−10	28	06.28
	Right hemisphere	–	000		–	–	–	–
S2	Left hemisphere	1	079	−1.00	−54	−19	22	08.11
	Right hemisphere	–	000		–	–	–	–
Stimulation of Left Hand
S1	Left hemisphere	–	000	−1.00	–	–	–	–
	Right hemisphere	1	246		−48	−19	58	11.90
S2	Left hemisphere	–	000	−1.00	–	–	–	–
	Right hemisphere	40	106		−54	−19	22	07.14

^aL: left; LI: laterality index; R: right; S1: primary somatosensory cortex; S2: secondary somatosensory cortex.