Table 1b.

Summary of activations produced by contrasts for colour groups > no groups, motion groups > no groups, colour no groups > groups and motion no groups > groups. Activations are shown for clusters with p < 0.05 significance after family-wise error correction. Abbreviations as in Table 1a.

Contrast	Brain areas	PFWE cluster	KE	X	Y	Z
Colour grouping > no grouping	lV4	0.000	159	− 36	− 55	− 8
	rV4, rV4α and cerebellum	0.000	286	33	− 46	− 23
	Left parietal	0.000	688	− 36	− 37	40
	Right parietal	0.000	712	33	− 43	49
	Right inferior frontal gyrus	0.002	91	57	14	31
Motion grouping > no grouping	lV5	0.000	177	− 36	− 67	2
	rV5	0.000	406	51	− 67	− 2
	Right parietal	0.001	103	27	− 52	70
	Right parietal	0.001	100	48	− 37	58
	Left medial insula	0.000	116	− 39	5	2
	Right medial insula	0.003	51	36	2	4
Colour no grouping > grouping	lV1	0.002	94	− 15	− 97	13
	rV1	0.005	76	18	− 97	10
Motion no grouping > grouping	lV1	0.000	128	− 9	− 97	16