Table 1.

HF functional connectivity during wakefulness

		Brain region	Brodmann areas	Cluster size (voxel)	Peak voxel
		Brain region	Brodmann areas	Cluster size (voxel)	t value	MNI coordinates
1	L/C/R	(Posterior) cingulate, uncus, fusiform gyrus, precuneus, culmen, claustrum, thalamus, hippocampus, amygdala	R7, L20, 23, 27–31, 34–36, L37	7548	17.37	28	−28	−16
2	R	Inferior/middle temporal gyrus	21	322	10.93	50	2	−32
3	R	Middle/superior frontal gyrus	8	207	9.72	24	22	54
4	L/R	Anterior cingulate, medial frontal gyrus	10, 32, L42	886	9.40	6	56	14
5	L	Angular gyrus	39	305	9.37	−44	−70	30
6	L	Middle/superior frontal gyrus	8	187	9.23	−22	28	52
7	R	Middle/superior temporal gyrus, angular gyrus, supramarginal gyrus	39	491	8.81	44	−64	28
8	L	Middle/superior temporal gyrus	21	298	8.25	−56	−14	−14

Clusters resulting from second-level random-effects analysis (p_FWE < 10⁻⁶, extent > 150). Regions showing significant functional connectivity with all HF subregions are listed. Sorting is after t values of the cluster peak voxel. Brodmann areas are identified for clusters covering >3% of the respective area. Coordinates (x, y, z) are given in MNI space. L, Left hemisphere; R, right hemisphere; C, central position.