Hi,

My question concerns how to code trials in 3dDeconvolve when the trial
occurs over more than one TR. In my experiment I have six event types
of interest and a baseline, and each event is 2 TRs in duration. I am
trying to code my vector text file, where I assign a 1 or a 0 value
for each TR.

I am wondering how to code (what value to assign to) the 2nd TR of
each event of interest. It would seem problematic to assign it a
value of 1. Should I simply assign it a 0? It seems that if I do,
then that second TR would be considered as the onset of a baseline
trial (which is not actually the case). I should mention that the 2nd
TR will be encompassed in the TRs that lie within my minlag and maxlag.

How, then, should I code that 2nd TR?
If I code it as a zero, can you explain how running the program in
that manner would differ from running it for an experiment where the
event only lasted 1 TR?

Thanks,

Yael