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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June 18, 2013 03:51PM
Hi,
My paradigm is this:

30s rest, 30s task1 (TR=2.5s), 12s rest, 30s task2(TR=2.5s),30s rest......

Now, in my proc.py, I am modeling it in 2 ways:

1. Provide stim files for task1 and task2 and using BLOCK(30,1) only

2. Provide stim files for task1, 12s rest (naming junk), task2 and using
regress_basis_multi option with
BLOCK(30,1), BLOCK(12,1), BLOCK(30,1) options

Which one seems right? To me, 2nd one make more sense as 12s rest between taks doesn't seem enough and if I don't model it, it will be part of baseline signal (I suppose).

Similarly, I carried the model to my PSC calculation.
There I have 3 TENT functions
TENT(-10,30,17), TENT(-4,12,7), TENT(-10,30,17)

But now my iresp file is giving some crazy numbers (like 30000, even though I am using scale option in AFNI)..

What seems to be the problem. Any help would be appreciated.

Thanks
Priyank
Subject Author Posted

Am I modelling right?

pshuk June 18, 2013 03:51PM

Re: Am I modelling right?

rick reynolds June 18, 2013 10:01PM

Re: Am I modelling right?

pshuk June 19, 2013 09:16AM

Re: Am I modelling right?

rick reynolds June 19, 2013 09:18PM

Re: Am I modelling right?

pshuk June 20, 2013 09:46AM

Re: Am I modelling right?

pshuk June 20, 2013 11:15AM

Re: Am I modelling right?

rick reynolds June 20, 2013 05:09PM

Re: Am I modelling right?

pshuk June 21, 2013 10:47AM