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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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Thanks for your help,Is there any paper putting all the data for each subject into one regression model ,As you said,dose it mean that all these pb04.Pilot1.r01.scale+orig.HEAD should align to the same 3DT1 space,then use the 3dDeconvolve regress the 6*5=30 scaled files.
by
zdlu
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AFNI Message Board
Dear experts:
I have collected four subjects of taste fmri, and each subjects tasted bitter,saly,sour,sweet,umami in a run.Each stimulus repeated six times in a run and every session includes six runs.In addition,each subjects took the same taste fmri experiment five times.After I used GLM model to fit this taste fmri data of each session ,each session produced a statistic results of five
by
zdlu
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AFNI Message Board
Hello, As I described before, each session has 6 run.and a run has six times of five tastes stimulation.So each session has 6*6*5=180 trails.In addition,I collected four subjects fMRI data and each subject has the same five session.In subhect level, can I use 3dmema to make one sample t-test of five session results of each subjects,Is it a correct way or can you give me some right suggestion to
by
zdlu
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AFNI Message Board
Dear experts:
Thanks for your reply.In my situation,1)I want to calculate the ICC at whole brain.By the way ,Is there difference of calculating ICC between at whole brain and at the region level? Dose the region level just mean a smaller mask?
2) In my task,subjects tasted bitter,salty,sour ,sweet,and umami solution.ICC for each task separately.
3) each session has 6 ru
by
zdlu
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AFNI Message Board
Hello,expert!
I have this situation: four subjects took part in a taste fmri experiment,Each one have five same session,and Each session has five run.Each run have the beat effects of five different task (A,B,C,D,E) and Each run has executed Each type task five times.Thus,each session has 6*6*5=180 trails. In addition,
all of the five session are the same.So I want to calculate the ICC v
by
zdlu
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AFNI Message Board
Thanks for your suggestion,It is so strange but it really works.By the way,I met this problem on another machine;
checking for R packages...
rPkgsInstall -pkgs ALL -check : FAILURE
oo Warning:
These packages are not installed on the computer: afex!
These packages are not installed on the computer: brms!
These packages are not installed on the compu
by
zdlu
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AFNI Message Board
Hello experts:
I performed 3dMEMA on five beta effects of 20 people ,the code was shown as below:
3dMEMA \
-prefix $outputdir/all_${taste[$i]} \
-verb 1 \
-max_zeros 0.25 \
-mask $outputdir/all_
by
zdlu
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AFNI Message Board
Thanks for your suggestion.In fact ,I want to measure the extent of reliability of the bold response,So the effect estimates (beta values) of the five task fmri session were all the same.I have only 5 effect estimates (beta values) per subject.And the big problem is that the number of participants is four.If I calculate the mean 5 effect estimates (beta values) per subject for two way anova,it
by
zdlu
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AFNI Message Board
I am so sorry about my description,'one subject take the task fmri five times ' means the number of sessions is five, what is more , the five task fmri is all the same,and we collected this same data structure on four people,so there is 4*5 session.
by
zdlu
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AFNI Message Board
Hello experts,
I have a fmri design with five test level in a run,A B C D E (there are six runs in a session ).and one subject take the task fmri five times,I only have 4 subjects and 4*5 sessions results.So I want to compare the difference of test effects( A B C D E)and session effects.I was wondering how one would conduct a 2-way repeated meassures ANOVA in such situation? Or there is a ef
by
zdlu
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AFNI Message Board
Hello.I have changed the code as you showed ,but there was still a problem(Error in FUN(array(newX[, i], d.call, dn.call), ...) :
object 'Mask' not found).and as you can see the data can be loaded done,
***** Summary information of data structure *****
2 subjects : chen duan
20 response values
5 levels for factor taste : bitter salty sour sweet umami
2 levels for factor session
by
zdlu
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AFNI Message Board
Hello,afni experts.When I use 3dICC to computes whole-brain voxel-wise ICC.There is a problem as shown below:
++++++++++++++++++++++++++++++++++++++++++++++++++++
***** Summary information of data structure *****
4 subjects : chen duan he yi
100 response values
5 levels for factor taste : bitter salty sour sweet umami
5 levels for factor session : five four one three two
100 levels for fa
by
zdlu
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AFNI Message Board
Hello,thanks for your reply.I have a question about taste fmri regression analysis.I have given the five taste stimulus,bitter,salty,sour ,sweet and umami. The fmri design is event design.different taste has different stimulus time.I run the 3dDeconvolve using the SPMG1 function for individual analysis.But it is strange that
the Bitter Resp Tstat and the Salty Resp Tstat have the same peak va
by
zdlu
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AFNI Message Board