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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Naomi Driesen
December 12, 2018 04:11PM
I am trying to do a 3dANOVA on some seed connectivity maps. I would like to do the analyses within a specific mask. My understanding is that when one does a 3dANOVA within a mask, the F and t-statistics should change for each voxel because there are fewer voxels tested. I tried to apply the mask by adding – mask to the 3dANOVA command. However, the F and t-statistics for each voxel still exactly matched the whole brain analysis. I know that the mask did work in other respects in that areas outside the mask did go to zero. What then is the correct way to do this analysis?
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Subject Author Posted

3dANOVA with mask

Naomi Driesen December 12, 2018 04:11PM

Re: 3dANOVA with mask

gang December 12, 2018 05:21PM

Re: 3dANOVA with mask

Naomi Driesen December 13, 2018 09:04AM

Re: 3dANOVA with mask

gang December 17, 2018 03:16PM