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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qy
October 21, 2014 03:01PM
Hi Gang,

Yes, I'm analyzing the data at the individual subject level and I'm looking at the trial-by-trial data. I used to use raw BOLD signals in my data analysis. But since I used changing ITIs in my design, I would like to see if using beta weights will lead to better results. That's why I wanted to try the 'TENT' function.

Actually I'm just wondering if it is still possible to model 25s while the trial length varied between 22s to 28s? I tried 22s and it worked, but the regress process was too slow and there was collinearity in the regression matrix. So I don't think it's a good solution to the problem.

Thanks!
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Subject Author Posted

stimulus timing file in 3dDeconvolve

qy October 20, 2014 11:34AM

Re: stimulus timing file in 3dDeconvolve

Peter Molfese October 20, 2014 12:06PM

Re: stimulus timing file in 3dDeconvolve

qy October 20, 2014 02:47PM

Re: stimulus timing file in 3dDeconvolve

Peter Molfese October 20, 2014 03:06PM

Re: stimulus timing file in 3dDeconvolve

qy October 20, 2014 03:13PM

Re: stimulus timing file in 3dDeconvolve

Peter Molfese October 20, 2014 09:35PM

Re: stimulus timing file in 3dDeconvolve

qy October 21, 2014 12:15PM

Re: stimulus timing file in 3dDeconvolve

gang October 21, 2014 02:28PM

Re: stimulus timing file in 3dDeconvolve

qy October 21, 2014 03:01PM

Re: stimulus timing file in 3dDeconvolve

gang October 21, 2014 04:37PM

Re: stimulus timing file in 3dDeconvolve

rick reynolds October 22, 2014 08:45AM

Re: stimulus timing file in 3dDeconvolve

qy October 22, 2014 02:39PM

Re: stimulus timing file in 3dDeconvolve

rick reynolds October 22, 2014 04:20PM

Re: stimulus timing file in 3dDeconvolve

qy October 22, 2014 04:34PM

Re: stimulus timing file in 3dDeconvolve

qy October 22, 2014 05:12PM

Re: stimulus timing file in 3dDeconvolve

rick reynolds October 24, 2014 11:55AM