Table 2.

Anatomical areas that showed a significant interaction contrast (Eq. 5) on a clusterwise level in experiment 1

					PALS		MNI
Area	Side	Extend (mm²)	Peak t	P (cluster)	Latitude	Longitude	x	z	y
More activated during target errors
IPSp	L	39	4.71	0.028	1	157	−28	−63	54
SPLmed	R	112	7.71	<0.001	−30	131	7	−65	60
SPLmedp	R	71	7.79	<0.001	−33	143	11	−72	52
IPS/TOS (V3a/V7)	L	70	7.66	<0.001	−22	−180	−22	−87	22
POS	L	184	9.31	<0.001	−60	167	−16	−73	21
POS	R	80	4.86	<0.001	−49	152	17	−71	35
POSinf	R	41	5.50	0.019	−80	160	14	−55	14
More activated during execution errors
PoCSa (2)	L	167	−6.11	<0.001	51	139	−55	−22	51
PoCSp (2/7)	L	128	−6.51	<0.001	41	151	−45	−31	45
PoCS (2)	R	60	−6.12	0.025	48	145	51	−23	50
PoCS (2)	R	39	−4.95	0.033	66	152	62	−12	39
SPLa (5)	L	17	−7.08	0.78	8	134	−30	−45	66
SPLa (5)	R	41	−4.16	0.026	24	147	37	−38	52
SPLm	L	50	−4.59	0.003	3	141	−32	−53	64
ITS (hMT)	R	100	−5.61	<0.001	−2	−144	46	−72	3

Height threshold was t₍₁₂₎ = 3.61; p = 0.002 (uncorrected). The total search volume was 110, 156 mm² (2869 resels), with an estimated smoothness of full-width half-maximum of 6.2 mm. The expected size of random clusters was 5.5 mm². All area sizes are calculated on individual surfaces and averaged (Diedrichsen, 2005). The SPLa cluster on the left side was not significant but was reported because it contained the highest t value, and we found a homologous area activated on the right side. The location of the maxima is listed in latitude/longitude for the population-averaged, landmark- and surface-based atlas (Van Essen, 2005) and the template of the MNI.L, Left; R, right; IPSp, posterior intraparietal sulcus; SPLmedp, middle posterior superior parietal lobe; POSinf, inferior parieto-occipital sulcus; PoSC, postcentral sulcus; PoCSa, anterior postcentral sulcus; PoCSp, posterior postcentral sulcus; SPLa, anterior superior parietal lobe; SPLm, medial superior parietal lobe; ITS (hMT), inferior temporal sulcus (human homolog of MT).