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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dante.picchioni
December 12, 2020 08:58AM
Dear Colleagues,

Hi. In the context of alignment, are the correlations used in the cost functions what I understand as a "spatial correlation"? That is, are you simply correlating the value at a point in space in the source dataset with the value at the same point in space in the base dataset and then repeating for all points in space? Of course you are not really "repeating;" you just have two variables/vectors, but you know what I mean. Speaking of spatial correlations, if I wanted to calculate them for a 3D+time source dataset so that I calculated a spatial correlation with a single functional base dataset or "template" for each time subbrick, which AFNI program should I use?

Sincerely,

Dante
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Subject Author Posted

Alignment cost function correlations

dante.picchioni December 12, 2020 08:58AM

Re: Alignment cost function correlations

ptaylor December 12, 2020 01:37PM

Re: Alignment cost function correlations

dante.picchioni December 14, 2020 02:54PM