Table 4. Interactions between predicted action category and group.

				MNI coordinates (mm)			t value	p value
Anatomical region	Putative functional name	BA	Cluster size	x	y	z	df = [1,31]	(corr.)
(A) Interaction with age group
L Thalamus			271	−21	−16	10	5.36	< 0.001
Midline Thalamus				0	−22	4	5.15
L Caudate				−9	−4	13	4.60
L Posterior Cingulate Gyrus	PCC	23/31	105	−18	−37	28	4.70	0.027
L Posterior Cingulate Gyrus	PCC	23		−24	−43	19	4.57
L Posterior Cingulate Gyrus	PCC	23		−9	−37	22	4.42
(B) Interaction with expertise group
L Caudate			195	−15	−22	13	4.58	0.002
L Caudate				−18	−7	16	4.37
L Thalamus				−9	−10	7	4.31

Interactions between action category and age group (A) and expertise group (B). Results were calculated using a voxel-wise threshold of p<0.001 and a minimum cluster size of 10 voxels. Only clusters are reported that reached cluster-corrected significance of p<0.05, FWE corrected. Up to three local maxima are listed when a cluster has multiple peaks more than 8 mm apart. Abbreviations for brain regions: PCC, posterior cingulate cortex.