Table 4. N1-peak amplitudes covarying with BOLD signal (ANCOVA).

Brainregion	Hemisphere	Size	T/F	P	x	y	Z
Average effect N1 ( T -Test)
Area 6	L	153	4.69		−24	11	53
	L	224	4.91		−27	−12	65
ACC	L	1870	5.77	<.001	−8	36	9
PCC	L	2104	5.60	<.001	−5	−50	41
Middle Frontal gyrus	L	160	5.55		−26	45	6
Inferior temporal gyrus	L	240	6.20		−62	−15	−32
Superior parietal lobe	L	399	4.47	0.017	−11	−69	48
Amygdala	R	387	4.60	0.020	36	−3	5
Caudate nucleus	R	400	4.58	0.017	9	−6	−3
Hippocampus	L	391	6.63	0.019	−29	−29	−20
Main effect N1 ( F -Test)
DLPFC	L	146	11.78		−54	32	−8
Superior medial gyrus	L	297	11.99		−12	59	21
Inferior parietal cortex	R	215	12.76		44	−68	23
Precuneus	L	257	10.67		−3	−51	39

Activation patterns resulted from a group-level GLM. ‘Average effect N1’: T-contrast (T>3.29) testing for general effects of N1-amplitudes as a covariate. ‘Main effect N1’: F-contrast (F>6.48) testing for this covariate taking into account any differences between crossmodally manipulated n-back conditions. Both contrasts were inclusively masked (p<.05, uncorrected) with the effects of interest of the four HRF regressors and thresholded at p<.05 MC-corrected, k>125. P-values are only reported if surviving voxel-level FWE correction.