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
April 09, 2021 05:42PM
Hi Oliver,

There should be many volumes in the Buck.PRF dataset. Note that buck.nii.gz is not technically valid NIFTI because it has many different stat types, so it is possible you would want to break it apart for other software.

In any case, that dataset has many volumes, one for each parameter, plus statistics. It might be good to watch a video on viewing statistical results, such as:

[www.youtube.com]


Also, maybe review the help for that PRF model function, which is not obvious how to see: 

3dNLfim -DAFNI_MODEL_HELP_CONV_PRF=Y -signal Conv_PRF

Maybe the output volumes are not so well described, but note that the purpose of the program is to find model parameters at every voxel, plus statistics for significance.

Would you like more details on the output? Running "3dinfo -VERB" on the output dataset might be helpful, too.

- rick
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AFNI pRF with 3dNLfim Attachments

olivercontier April 02, 2021 08:20AM

Re: AFNI pRF with 3dNLfim

rick reynolds April 09, 2021 05:42PM