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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rick reynolds
July 27, 2022 12:45PM
Hi Tessa,

Just as a follow-up to others reading this thread, Tessa and I have looked into this and found that there is a bug in 3dDeconvolve when using -stim_times_IM for a regressor class that has no events. It is not such an odd case - one can see the use of IM in the case of missing or incorrect reponses, say, and then imagine that for some subjects, there might not be any such events. Having no events is fine for other cases, like -stim_times or -stim_times_AM2, but there are problems with -stim_times_IM.

We will look at what might be going on here. More news at some point...

Thanks a lot, Tessa!

- rick
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Subject Author Posted

Parametric Modulation with fMRIPREP- odd #0 contrast results

tessaclarkson July 11, 2022 02:29PM

Re: Parametric Modulation with fMRIPREP- odd #0 contrast results

tessaclarkson July 18, 2022 05:36PM

Re: Parametric Modulation with fMRIPREP- odd #0 contrast results

rick reynolds July 18, 2022 05:56PM

Re: Parametric Modulation with fMRIPREP- odd #0 contrast results

rick reynolds July 21, 2022 03:57PM

Re: Parametric Modulation with fMRIPREP- odd #0 contrast results

rick reynolds July 27, 2022 12:45PM