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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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Hi, I googled this issue on adwarp vs. @auto_tlrc and I'd like to follow up on this post. A few questions, if you don't mind:
-When it comes to transforming an epi +orig dataset into +tlrc space, are there any advantages to using adwarp vs @auto_tlrc? I know from the posts above that adwarp does linear transformation while auto_tlrc does 5th order polynomial (or other transformations
by
lisam
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AFNI Message Board
Ahh yes, this looks like it could work for me. Thanks Cesar!
by
lisam
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AFNI Message Board
Dear AFNI helpers,
I have a question about how to rank activity values on a voxel-specific level, rather than across all voxels.
I have 30 activity maps for each subject, so there are 30 unique betas per voxel. For each individual voxel in the subject’s brain map, I need rank the betas across the 30 maps, and determine the rank of each voxel in map #1, relative to the other 29, and then as
by
lisam
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AFNI Message Board
Yes now I can see that the timing is in the DICOM files-- cool! And it looks like the time-offsets per slice from this FROM_IMAGE tpattern are the same as those generated by tpattern = alt+z2. Thanks Rick.
by
lisam
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AFNI Message Board
Dear AFNI gurus,
I am analyzing data from a rapid event-related design, and I’m trying to figure out how to properly apply slice timing correction. I scanned on a Siemens 3T Trio that collects 42 slices per 3sec TR in an interleaved fashion.
A labmate told me that for most Siemens sequences, if there are an even number of slices per TR, then an even slice is collected first, and hence the s
by
lisam
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AFNI Message Board
Hi Rick,
I have the same issue as this person did six years ago (i.e., different runs have different #TRs). I think it would be really helpful if could be accommodated by make_stim_times.py!
-Lisa
by
lisam
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AFNI Message Board