Table 5.

Main effects for frequency bands^a

Contrast items	Region label	Extent	z Value	MNI coordinates
				x	y	z
Positive (S4>S5)	Brain stem	355	3.719	−6	−36	−9
	R brain stem	355	2.560	12	−30	−21
Negative (S4<S5)	R superior orbital gyrus	660	−4.498	18	27	−15
	L superior orbital gyrus	660	−4.251	−18	36	−18
	R superior parietal lobule	116	−2.791	36	−48	45
	R precuneus	116	−2.604	12	−63	54

Notes: Regions were automatically reported and labeled using bspmview (http://www.bobspunt.com/software/bspmview) and AnatomyToolbox atlas (http://www.fz-juelich.de/inm/inm-1/EN/Forschung/_docs/SPMAnatomyToolbox/SPMAnatomyToolbox_node.html). x, y, and z=MNI coordinates in the left–right, anterior–posterior, and inferior–superior dimensions, respectively.

^aPositive and negative effects at a given threshold (cluster p<0.05, GRF corrected) are shown.

Abbreviations: GRF, Gaussian random field; L, left; MNI, Montreal Neurological Institute; R, right; S4, slow-4; S5, slow-5.