Dear FS team,

we are setting up FS 6.0 and have run one test case.

The run went through but only after we created a 001.mgz image.

It seems somewhat strange to us.

Thank you so much,

best,

Elisabetta

________________________________ From: freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu on behalf of stdp82@virgilio.it stdp82@virgilio.it Sent: Thursday, July 13, 2017 10:37 AM To: freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] 3G1V.fsgd

Dear FS group,

I don't understand how I should build the contrast for 3 groups 1 covariate. No specific example is provided within fsgd example and also other colleagues report the same problem in the mail list. Please could you provide us details on this topic? Especially, how should be the g3v1.intercept and g31v.slope?

1 -1 0 0 0 0 1 0 -1 0 0 0 for g3v1.intercept.mtx

and 0 0 0 1 -1 0 0 0 0 1 0 -1 for g3v1.slope.mtx

are corrected?

Waiting for you very wellcome suggestions

Thanks and kind regards

Stefano

On 07/13/2017 10:37 AM, stdp82@virgilio.it wrote:

Dear FS group,

I don't understand how I should build the contrast for 3 groups 1 covariate. No specific example is provided within fsgd example and also other colleagues report the same problem in the mail list. Please could you provide us details on this topic? Especially, how should be the g3v1.intercept and g31v.slope?

1 -1 0 0 0 0 1 0 -1 0 0 0 for g3v1.intercept.mtx

This is the main effect of group on the intercept regressing out the effect of covariate.

and 0 0 0 1 -1 0 0 0 0 1 0 -1 for g3v1.slope.mtx

This is the main effect of group on the slope regressing out the effect of group intercept.

are corrected?

Waiting for you very wellcome suggestions

Thanks and kind regards

Stefano

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