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

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lmm194
August 24, 2016 10:03AM
Hello,

I am interested in comparing two different stimuli classes wordsVhouses and found that when I look at the output for when I have 3dDeconvolve do the comparison and the output for when I do a two sided t-test in ttest++ they are different.

In the first case I compared wordsVhouses as a GLT in my 3dDecon script and then put that subbrick into 3dttest++ as a one sided t-test. In the second case I took the subbrick for words and the subbrick for houses and compared the two in ttest++. The results are similar, but the 3dDecon is noisier and I am wondering why that is, should these be doing something very similar?

Thank you for your help!
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Subject Author Posted

3dttest++ VS 3dDecon comparisons

lmm194 August 24, 2016 10:03AM

Re: 3dttest++ VS 3dDecon comparisons

gang August 24, 2016 04:51PM

Re: 3dttest++ VS 3dDecon comparisons

rick reynolds August 24, 2016 08:25PM

Re: 3dttest++ VS 3dDecon comparisons

lmm194 August 25, 2016 02:34PM