Hi,
> I have a very naive question about inclusion of time derivative in
> analysing block design fMRI data (TR = 2s, block duration = 20s). Is it
> suggested to include time derivative for block design or it is only used
> for event-related?
I think the answer to that would be that it is basically only used for
event-related. There is a characteristically clear explanation from
Jesper Andersson here:
http://www.jiscmail.ac.uk/cgi-bin/webadmin?A2=ind04&L=SPM&P=R351987&I=-3
Best,
Matthew
|