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

History of AFNI updates  

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October 08, 2008 04:16PM
A spike should really be an uncorrectable artifact.

Most commonly, a spike might be due to a fairly quick (even if
small) subject motion. Such a motion is usually different over
slices, as therefore would not be fixed by volume registration.
In such a case, you might want to minimize corruption of TRs
that are adjacent to the spike when time shifting.

That is the motivation for running 3dDespike first.

Look closely at your data and try to get a feel for the effects
of these steps. Then decide based on your own circumstances.

- rick

Subject Author Posted

3dDespike and 3dvolreg order

Aditya Prasad September 30, 2008 02:12PM

Re: 3dDespike and 3dvolreg order

rick reynolds October 01, 2008 09:40AM

Re: 3dDespike and 3dvolreg order

Aditya Prasad October 01, 2008 08:38PM

Re: 3dDespike and 3dvolreg order

Aditya Prasad October 01, 2008 08:43PM

Re: 3dDespike and 3dvolreg order

rick reynolds October 02, 2008 10:27AM

Re: 3dDespike and 3dvolreg order

Aditya Prasad October 08, 2008 12:35AM

Re: 3dDespike and 3dvolreg order

rick reynolds October 08, 2008 04:01PM

Re: 3dDespike and 3dvolreg order

Aditya Prasad October 08, 2008 12:42AM

Re: 3dDespike and 3dvolreg order

Aditya Prasad October 08, 2008 12:53AM

Re: 3dDespike and 3dvolreg order

rick reynolds October 08, 2008 04:16PM