Table 2.

Summary of results using the perceptual index (PI) as a regressor to predict functional connectivity. The table shows clusters whose correlation with the corresponding ROI changed reliably with motor learning. P_corr is the corrected cluster-level P value related to the regressor of interest (PI). The associated Z score for the peak is shown in the Z value column. Z value Day 1 and Z value Day 2 give Z scores at the location of maximum activation based on values averaged over subjects on Day 1 and 2 respectively. A negative Z score indicates an anti-correlation between the ROI time-series and the time series of activation peak. SII: second somatosensory cortex; SFG: superior frontal gyrus.

ROI	Pcorr	Z value	MNI coordinate			Z value Day 1	Z value Day 2	Cluster’s anatomical label
			x	Y	z
SII	0.01	4.2	−30	−18	48	−0.06	4.47	L BA4, primary motor cortex
		3.95	−26	−12	46	1.8	4.11	L BA6, ventral premotor cortex
		3.8	−42	−12	56	1.54	3.62	L BA6, premotor cortex
SMA	0.002	4.39	−62	−16	12	4.6	7.4	L SII, OP1
		3.4	−58	−20	20	3.3	5.2	L SII, OP1
PMv	0.0000	6.1	−62	−18	16	0.04	4.65	L SII, OP1
		4.2	−56	−18	28	4.2	6.35	L Inferior parietal lobule
CB	0.0007	4.08	−8	−84	50	−0.1	−3.7	L Superior parietal lobule
		4.02	36	−80	24	−1.2	−2.9	R Inferior parietal lobule
	0.0001	4.39	−10	66	16	0.45	3.8	L SFG, BA 10