You can tell from the sign of the "VtxMax" column that indicates the maximum in the cluster. If you used a signed test (pos or neg), then they will all have the given sign. If  you used an unsigned test (abs), then they may have different signs.

On 12/04/2018 11:54 AM, Backhausen, Lea wrote:

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Dear FreeSurfer experts,

I am running whole-brain based group comparisons of cortical measures between a patient group and a control group using glm-fit and Monte-Carlo correction for multiple comparisons.

It works fine but I am not sure where to find information on which group has more or less volume, for example, in a significant cluster.

I use the xxx.sig.cluster.summary files which give me something like this:

ClusterNo

Max

VtxMax

Size(mm^2)

MNIX

MNIY

MNIZ

CWP

CWPLow

CWPHi

NVtxs

WghtVtx

Annot

1

3.806

82573

3279.56

44.3

22.8

29.5

0.00020

0.00000

0.00040

5510

11256.20

rostralmiddlefrontal

2

2.099

122283

806.53

38.4

-69.6

44.6

0.68055

0.67327

0.68774

1654

2759.09

inferiorparietal

Is the direction hidden somewhere or in another file? Do I have to run additional commands to get to the information?

Thank you so much for any advice!

Best

Lea

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Lea Backhausen

Research Assistant

Department of Child and Adolescent Psychiatry, Faculty of Medicine of the TU Dresden, Germany http://www.uniklinikum-dresden.de http://www.uniklinikum-dresden.de/

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