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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February 26, 2018 11:21AM
Dear AFNI experts,

I tried to do group analysis by using the command 3dANOVA3,but the result didn't seem good.So i am wondering that is there some problem about the analysis for every single subject? After preprocessing, i analysed the data by 3dDeconvolve and got the results .Cause it has two different kind trials of the data,so i get the β values by using 3dTcat, and then average them separately by using 3dTstat.But i found for some subject i get a very weird results.My questions are as follow:
1, After doing 3dDeconvolve,i get 10 β values for each kind trials, how can i to draw a picture to see which is the biggest one?
2,To do the group analysis,should i use the average value of the 10 β value or choose another method?
3,Before doing group analysis by 3dANOVA3 ,is it right for me to get it separately and average them as i said before, and use the results as the input data for 3dANOVA3?
I really hope any of the experts of afni could help me to solve the problem,best wishes!

-Jack
Subject Author Posted

About group analysis

jack123 February 26, 2018 11:21AM

Re: About group analysis

gang February 26, 2018 05:20PM

Re: About group analysis

jack123 February 27, 2018 07:17AM

Re: About group analysis

gang February 27, 2018 01:34PM

Re: About group analysis

jack123 February 28, 2018 04:48AM