Detecting functional magnetic resonance imaging activation in white matter: Interhemispheric transfer across the corpus callosum

Table 1 Clusters used in the time course analysis

	Corpus callosum clusters					Comparable gray matter clusters
	MNI coordinates					MNI coordinates
Subject	x	y	z	Cluster size	Z-score	x	y	z	Cluster size	Z-score
01	3	-21	24	41 (31)	5.54	64	-45	0	31 (29)	6.95
02	3	-39	15	12 (10)	5.44	54	-36	3	24 (20)	5.43
03	0	-27	21	116 (52)	6.06	48	36	18	927 (39)	7.04
04	0	-27	24	33 (22)	6.69	-51	-60	-18	58 (51)	5.20
05	0	-24	18	9 (9)	4.82	-39	-78	27	75 (7)	6.14

Details on the clusters from which time course signals were extracted (Figure 3). For each subject, a gray matter cluster was selected such that it was comparable in size and activation intensity to the corpus callosum cluster under investigation. Note that the cluster size column has two values: the actual size of the cluster from the whole brain analysis, and the size of the cluster used in the time course analysis (in parentheses). See Methods for details.

ISSN: 1471-2202