AFNI Message Board

Dear AFNI users-

We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:

https://discuss.afni.nimh.nih.gov

Existing user accounts have been migrated, so returning users can login by requesting a password reset. New users can create accounts, as well, through a standard account creation process. Please note that these setup emails might initially go to spam folders (esp. for NIH users!), so please check those locations in the beginning.

The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.

Sincerely, AFNI HQ

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Alessandra
March 17, 2010 07:13PM
Hi Gang,
thanks a lot for the suggestion about 3dcalc. We tried it out and it seems easy to implement, but what's happening is that clusters that are significant in the whole brain F map and that are present in the whole brain t-tests disappear once we use a mask (made from the f map) in the t-tests. I am not sure why. Only the clusters that are present in the t-test but that are not present in the F map should be eliminated.
Do you see anything wrong with our lines? Thank you in advance.
Alessandra


3dmerge -prefix funct_roi_mask+tlrc -1clip 1.0 -1clust_order 3.1 270 Fmap_group_task+tlrc

3dcalc -a ttest.PT-HC.3res.1-2+tlrc -b funct_roi_mask+tlrc -expr 'a*b' -prefix TRY
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Subject Author Posted

examining interaction effects from whole brain anovas

Alessandra March 08, 2010 06:30PM

Re: examining interaction effects from whole brain anovas

Gang Chen March 09, 2010 10:23AM

Re: examining interaction effects from whole brain anovas

Alessandra March 09, 2010 11:15AM

Re: examining interaction effects from whole brain anovas

Gang Chen March 09, 2010 01:24PM

Re: examining interaction effects from whole brain anovas

Alessandra March 12, 2010 06:52PM

Re: examining interaction effects from whole brain anovas

Gang Chen March 15, 2010 09:27AM

Re: examining interaction effects from whole brain anovas

Alessandra March 15, 2010 11:28AM

Re: examining interaction effects from whole brain anovas

Gang Chen March 15, 2010 01:56PM

Re: examining interaction effects from whole brain anovas

Alessandra March 17, 2010 07:13PM

Re: examining interaction effects from whole brain anovas

Gang Chen March 18, 2010 01:14PM