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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Gang Chen
December 30, 2008 12:13PM
> how much of an impact using the pen as '01,' instead of '012' would have on
> the PPI analysis, esp. on the accuracy of the deconvolution of the seed
> timeseries. I can't really compare since I currently can't run it with 012.

There is probably no such a uniform penalty function or/and penalty factor that would render a reasonable deconvolution result. So the best you can do is to check the result and see if it looks reasonable to you since you know your stimulus timing.

> what about just rounding up the 1/10s to 1s in my 1D files so that I don't
> need to upsample my seed timeseries (TR=2) so much?

Well, try it out and see if it turns out good enough.

Gang
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Subject Author Posted

Bob: 3dTfitter fails

jinny December 29, 2008 11:38AM

Re: Bob: 3dTfitter fails

jinny December 29, 2008 11:43AM

Re: Bob: 3dTfitter fails

Bob Cox December 29, 2008 01:06PM

3dTfitter fails - WHY

Bob Cox December 29, 2008 03:45PM

Re: 3dTfitter fails - WHY

jinny December 29, 2008 07:11PM

Re: 3dTfitter fails - WHY

Gang Chen December 30, 2008 12:13PM

Re: 3dTfitter fails - WHY

Gang Chen December 31, 2008 09:46AM