Table 1c.

Summary of activations produced by contrasts for linear relationships between activation and number of 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
Parametric by number of colour groups	lV4	0.000	141	− 45	− 70	− 5
	rV4 and cerebellum	0.000	282	33	− 49	− 17
	Left parietal	0.000	116	− 39	− 31	67
	Right parietal	0.001	100	27	− 61	55
	Right parietal	0.047	44	42	− 34	46
	Right precentral gyrus	0.005	72	63	− 16	34
Parametric by number of motion groups	lV5	0.000	309	− 36	− 64	− 2
	rV5	0.000	326	45	− 61	7
	Left parietal	0.006	72	− 36	− 46	58
	Right parietal	0.000	146	27	− 55	67
	Right parietal	0.040	47	30	− 67	28
	Right cerebellum	0.002	87	33	− 46	− 20