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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bob cox
September 20, 2003 12:38PM
The input to all the time series analysis programs is a model of what to look for. In most cases, the model is specified by a file (or files) of numbers, 1 value per line -- each line represents a time point. In your case, you would want a file that was like so:

0
0
... 8 0's in a row
0
1
1
... 16 1's in a row
1
repeat

As Ziad mentioned, the sqwave program can generate such a file for you, which you can then use as input to 3dfim, 3dfim+, 3dDeconvolve, waver, or the AFNI GUI FIM.

However, it seems to me that you are trying to start analyzing without reading the manuals or the online educational material. That will only lead to frustration.

Finally, 48 time points is about the smallest you could have to get any worthwhile results in FMRI.

bob cox
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Subject Author Posted

specifying a paradigm

Jen Townsend September 19, 2003 04:23PM

Re: specifying a paradigm

Ziad September 19, 2003 04:45PM

Re: specifying a paradigm

bob cox September 20, 2003 12:38PM