Table 2 Cluster information of seed-based connectivity analyses.

From: Prolonged microgravity induces reversible and persistent changes on human cerebral connectivity

Seed: contrast Labeled brain region

 

Peak voxel coordinates

cluster size

beta

T-value

p-cFWE

  

x

y

z

    

Seed: Posterior cingulate cortex (postflight > preflight) (df = 14)

No significant results

Seed: Posterior cingulate cortex (preflight > postflight) (df = 14)

No significant results

Seed: Thalamus (sustained increases: contrast [−1 0.5 0.5]) (df = 10)

No significant results

Seed: Thalamus (sustained decreases: contrast [1 −0.5 −0.5]) (df = 10)

Superior frontal gyrus, R

24

26

40

348

0.14

7.07

<0.001

Superior frontal gyrus, L

−14

38

52

251

0.18

6.42

0.008

Seed: Angular gyrus, R (sustained increases: contrast [−1 0.5 0.5]) (df = 10)

Angular gyrus, L

−32

−64

54

178

0.17

6.78

0.044

Inferior frontal gyrus (pars triangularis), L

−32

38

04

176

0.17

6.39

0.047

Seed: Angular gyrus, R (sustained decreases: contrast [1 −0.5 −0.5]) (df = 10)

Precentral gyrus, R

40

−04

58

990

0.16

9.09

<0.001

Postcentral gyrus, L

−32

−40

64

681

0.15

7.30

<0.001

Postcentral gyrus, L

−44

−22

48

205

0.14

6.77

0.021

Seed: bilateral insula (normalized increases: contrast [−0.5 1 −0.5]) (df = 10)

Angular gyrus, L

−26

−80

42

195

0.14

5.42

0.044

Seed: bilateral insula (normalized increases: contrast [0.5 −1 0.5]) (df = 10)

Precentral gyrus (medial), R

18

−34

36

2769

0.13

9.15

<0.001

Central operculum, L

−50

02

−02

263

0.15

7.41

0.008

Central operculum, R

54

−02

18

259

0.15

6.99

0.009

Planum temporale, L

−68

−26

34

258

0.15

7.08

0.009

Supramarginal gyrus, R

48

−32

36

227

0.15

5.65

0.019

  1. A seed-based connectivity analysis was run with the resulting clusters from the global connectivity analysis as seed regions. The contrast tested is included for each of the seeds. Beta values represent a measure for effect size; T-values are cluster-averaged; p-cFWE is the p-value after cluster-wise family-wise error (FWE) correction. This threshold was set at p < 0.05. Bold fonts are used as headers to define the exact test that was performed.