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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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yes, Mean_Act varies across levels, the 4 different levels of "type". I could put it into the model as a fixed effect, with age as well, I can try that tomorrow.
How could I send you some sample data, via email?
Are there any existing afni tools that can get at what i described above? I wouldn't want you to put in all that work for just me if there is another way to get at w
by
anish_paradise
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AFNI Message Board
Hello-
I was able to get 3dlme to start running, however it doesn't like the fact that I point the vVars to 4 different sub-bricks based on condition for the covariate. It says:
** Error: Error with voxel-wise covariate Mean_Act: Each subject is only allowed to have one volume; that is, the covariate has to be at the subject level.
It is able to read in my table/data structure, just
by
anish_paradise
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AFNI Message Board
that was a good guess, I was able to get the 3dMLE to run. thanks! will let you know if i have any other issue
by
anish_paradise
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AFNI Message Board
Hi Gang,
OK, I changed it to 3dLME, but i still get an error message
#!/bin/bash
3dLME \
-prefix 3dLME_output_EVRep_09_10_15 \
-jobs 6 \
-model "Type*Mean_Act+Age" \
-mask TT_N27.nii \
-qVars "Age, Mean_Act" \
-ranEff '~1+Mean_Act' \
-SS_type 3 \
-num_glt 11 \
-gltLabel 1 novel -gltCode 1 'Type : 1*novel' \
-gltLabel 2 early_rep -gltCode
by
anish_paradise
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AFNI Message Board
thanks Pete, that did help launch the command, however now I am getting this error message:
Read 653 items
Loading required package: afex
Loading required package: car
Loading required package: lme4
Loading required package: Matrix
Loading required package: Rcpp
Loading required package: reshape2
************
Welcome to afex. Important notes:
Due to popular demand, afex doesn't
by
anish_paradise
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AFNI Message Board
Hi, I am having trouble executing a 3dMVM command. I went through the help topics and tried adding/deleting slashes, as well as renaming my dataTable to just be a table, however i am still getting the message
Error in if (len%%wd != 0) errex.AFNI(paste("The content under -dataTable is not rectangular !", :
argument is of length zero
Calls: process.MVM.opts
Execution halted
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anish_paradise
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AFNI Message Board
Hello-
I am trying to run the 3dhistog command on a set of Beta-valued data to see if I can determine what a good cut-off point would be for outliers (i.e. Betas can often get inflated due to neighboring motion or TR pulse artifact). I have a script that I ran to exclude Beta outliers more extreme than +/- 500, however I wanted to see if there were a better more stringent cut-off for this, and
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anish_paradise
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AFNI Message Board
Sure what I mean is if I want to look at the correlation of activation (BOLD) from one trila to the next, throughout the course of a run, I can extract a ceta weight from each trial and then look at the variability from trial to trial.
Page 754, top left from (http://rissmanlab.psych.ucla.edu/rissmanlab/Publications_files/Rissman_NeuroImage_2004.pdf)
The classic univariate method for estima
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anish_paradise
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AFNI Message Board
Hi-
has anyone attempted Beta Series correlation in AFNI? I am trying to use it on a dataset (analysis is described in some detail in the attachment). I want to look at variabilitiy in responses, and I thought this would be a good technique to examine individual differences in variability and see how this correlates with language measures.
-AK
by
anish_paradise
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AFNI Message Board