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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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Results 91 - 98 of 98
Hi, Experts,
I attempt to analyze part of my data, thus use the "sed" to extract part of my stim_times. However, I got error alarms as below.
** ERROR: '13.40 45.16 50.81 56.63 61.16 85.62 90.76 ' is unknown response function type
** FATAL ERROR: '-stim_times 1': don't understand basis function model '13.40 45.16 50.81 56.63 61.16 85.62
by
Juan
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AFNI Message Board
Oh, I now know the reason. You hit the point!!!
Thanks a lot, Rick
by
Juan
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AFNI Message Board
Hi, Rick and other experts,
I do have a question on the “collinearity”. As you directed, I changed the empty timing file to one with valid times (I also removed the previous '-GOFORIT 3'). I ran the script again. However, I met this error alarm.
*+ WARNING: !! in Signal+Baseline matrix:
* Largest singular value=2.29929
* 1 singular value is less than cutoff=2.29929e-07
* Imp
by
Juan
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AFNI Message Board
Thank you both very much.
Very insightful (helpful and instructional) comments!!
J
by
Juan
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AFNI Message Board
Dear Experts, I have two questions on 3dDeconvolve. 1) How to extract one special row data from a txt file for the -stim_times input? 2) how to handle the error trials as an irrelevant regressor in the analysis. Any comments are much appreciated.
In my experiment, I have 6 runs. Now I attempt to do the 3dDeconvolve analysis run by run. I have prepared the stimuli onset file in a txt file - i
by
Juan
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AFNI Message Board
Hi, Experts,
How to use the AFNI tool to simulate the fMRI data? I mean that by this way, we can know how many subjects we should recruit to reach a power, say 0.80? I know two guys (Mumford & Nichols, 2008, NeuroImage) developed a tool "fMRI power" for this aim, but it only works with SPM/FSL. I do not have those package experience.
It seems that we also need decide the ROI(
by
Juan
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AFNI Message Board
rick,
Thanks a lot. I am going though it - it is perfect.
frank
by
Juan
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AFNI Message Board
Hi, Experts,
Could you guys direct some instruction files for the Resting state fMRI data analysis with AFNI package? Thanks a lot.
F
by
Juan
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AFNI Message Board
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Pages: 1234