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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Michael
February 04, 2004 09:35AM
I have a question about choosing the Minlag and Maxlag when running 3dDeconvolve. If you are estimating the hemodynamic response, what is a good way to determine the amount of lags. Is it by looking at the iresp function to see if your IRF is modeled correctly? Or could you look at the Single Trial Average of your Time Series to determine the numbers for Minlag and Maxlag? Or is there an alternative method. Moreover, is there a disadvantage for using to many lags?

Secondly, if doing the "pure multple regression" method, i.e., running regressors through waver first, is it always the case to set minlag=maxlag=0?

Any help would greatly be appreciated.

Thanks,

Michael
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Subject Author Posted

Choosing the Minlag and Maxlag

Michael February 04, 2004 09:35AM

Re: Choosing the Minlag and Maxlag

Gang Chen February 04, 2004 01:35PM

Re: Choosing the Minlag and Maxlag

Michael February 04, 2004 01:45PM

Re: Choosing the Minlag and Maxlag

Gang Chen February 04, 2004 06:12PM

Re: Choosing the Minlag and Maxlag

Michael February 05, 2004 08:42AM

Re: Choosing the Minlag and Maxlag

Gang Chen February 05, 2004 05:38PM