Table 2.

Significant clusters identified in an omnibus test for two 2×2 repeated measures ANOVA using group (CLBP > HC) and condition (Sadness > Baseline; Happiness > Baseline) as factors. These clusters were shown to have altered fcMRI with key hubs of the DMN (i.e., MPFC and PCC) following mood inductions.

Model	Hemisphere	Cluster Coordinates	Cluster Size	F(1, 31)	Cluster p-val (<.05 FDR)	Cluster Regions	Voxels per Region
CLBP > HC, sadness > baseline	Left	−44 −28 20	453	11.59	.000	Parietal Operculum	169
						Postcentral Gyrus	86
						Supramarginal Gyrus	33
						Planum Temporale	20
						Heschl’s Gyrus	6
	Right	58 −18 26	363	14.69	.000	Parietal Operculum	117
						Supramarginal Gyrus	127
						Postcentral Gyrus	76
						Planum Temporale	23
	Left	−30 2 −4	315	15.64	.000	Posterior Insula	124
						Putamen	74
						Heschl’s Gyrus	39
						Central Opercular Cortex	21
						Planum Polare	10
	Midline	4 28 24	128	12.36	.05	ACC	128
	Left	−38 −42 −36	125	8.77	.05	Cerebellum	67
						Fusiform Gyrus	25
						Inferior Temporal Gyrus	24
	Left	−24 52 34	124	13.17	.05	Frontal Pole	124
	Right	34 4 0	119	12.55	.05	Posterior Insula	50
						Putamen	15
CLBP > HC, happiness > baseline	Right	28 −82 −40	208	24.18	.013	Cerebellum	208