Table 2.

Coordinates of peak correlations between condition-specific BOLD-signal variability and performance

Brain region	BA	Hemisphere	MNI coordinates			Tmax	k
			x	y	z
Task switching BOLD-signal variability negatively correlating with task switching costs in error rates
IFJ	9/45/8/6	Left	−34	6	40	3.49	10301**
MFG/superior frontal gyrus	9/8	Left	−36	32	34	3.85	*
ACC	24/32	Right	2	40	16	3.59	*
MPFC	9/10	Left	−2	62	2	3.72	*
SMA	32	Left	−2	10	46	4.21	*
Middle/posterior cingulate cortex	31/24	Right	6	−38	46	5.65	*
Postcentral gyrus	43	Left	−44	−22	24	4.29	*
IFG/insula	13/45/46/47	Right	34	26	12	3.77	6338†
Calcarine sulcus	17/18	Right	2	−96	0	4.13	†
Thalamus		Left	−16	−28	2	4.33	†
Distractor inhibition BOLD-signal variability negatively correlating with distractor inhibition costs in error rates
MPFC	10	Right	6	32	−10	4.05	1007
			0	60	8	3.76
IFG	44/45/36/47	Right	56	28	10	4.27	285
Precuneus	31/7	Right	2	−50	44	3.84	406
Angular gyrus	39/40	Left	−52	−62	36	3.60	280
		Right	62	−50	28	3.91	206
Cuneus/occipital cortex		Right	14	−86	42	3.97	774
Distractor inhibition BOLD-signal variability positively correlating with distractor inhibition costs in RT
IFJ	9/8	Left	−42	12	40	3.99	137

For correlations between task-switching-related BOLD-signal variability and task-switching error costs local maxima are reported as the correlations formed from two extensive clusters: *one containing 10,301 voxels and the ^†other containing 6338 voxels.