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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May 05, 2021 10:12PM
Agent 007-

We did a build yesterday, and the newest code has updates+fixes based on your comments---thanks very much for noticing those things.

Firstly, the Mean table values by default will *not* be absolute valued; if anyone wants that, they can use this new option:
-abs_table_data :(new, from Apr 29, 2021) Use the absolute value of voxel
                 intensities (not the raw values) for calculation of the
                 mean and Standard Error of the Mean (SEM) in the report
                 table. Prior to the cited date, this was default behavior
                 (with '-noabs' switching out of it) but no longer.

Secondly, the scale factors will be applied, too. (I'm not sure when they got ignored in the code, but that is fixed now.)

For what to do with the ROI values in modeling, that might be better to ask as a separate thread. 3dLMEr is probably a good start, but exactly which way to go and how to model depends on what other data you have, what your study design is, etc. Perhaps you have also seen Gang's note on 3dLMEr.
[afni.nimh.nih.gov]

For some more takes of region-based analysis, this is also some of Gang's newer work (describes the program RBA for region-based analysis):
Chen G, Xiao Y, Taylor PA, Rajendra JK, Riggins T, Geng F, Redcay E, Cox RW (2019). Handling Multiplicity in Neuroimaging Through Bayesian Lenses with Multilevel Modeling. Neuroinformatics. 17(4):515-545. doi:10.1007/s12021-018-9409-6
[pubmed.ncbi.nlm.nih.gov]

--pt
Subject Author Posted

3dClusterize vs 3dclust

AFNIuser007 April 29, 2021 11:08AM

Re: 3dClusterize vs 3dclust

ptaylor April 29, 2021 11:49AM

Re: 3dClusterize vs 3dclust

AFNIuser007 April 29, 2021 01:21PM

Re: 3dClusterize vs 3dclust

ptaylor May 05, 2021 10:12PM

Re: 3dClusterize vs 3dclust

AFNIuser007 May 10, 2021 04:28AM