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  

|
September 02, 2005 04:31PM
I got you.

I guess there are two approaches. One is assuming the response for each block of those 4 TR's is linear, and use the behavior-weighted inputs for the block design. The advantage is that you have more degrees of freedom, but with the assumption of linearity in each block.

The other approach is to treat each TR in a block as a separate stimulus, and in the end you make different trend tests: linear, quadratic, or something else? In this case no assumption is made, but you would sacrifice with the loss of triple degrees of freedom.

Maybe try both?

Gang
Subject Author Posted

Modeling the Linear increase in stimulus-induced response

Michael September 01, 2005 11:05AM

Re: Modeling the Linear increase in stimulus-induced response

Gang Chen September 01, 2005 11:23AM

Re: Modeling the Linear increase in stimulus-induced response

Michael September 02, 2005 03:38PM

Re: Modeling the Linear increase in stimulus-induced response

Gang Chen September 02, 2005 03:57PM

Re: Modeling the Linear increase in stimulus-induced response

Michael September 02, 2005 04:14PM

Re: Modeling the Linear increase in stimulus-induced response

Gang Chen September 02, 2005 04:31PM

Re: Modeling the Linear increase in stimulus-induced response

Robert Cox September 01, 2005 11:27AM