Mariko,
I am still confused with the difference of "baseline" and "fixation" task in your experiment. Which one is being used to model the baseline and drifting effect?
> given that we have one task that is 24 minutes long, is it
> OK to use only six minutes of baseline in the deconvolve
> or does baseline need to have the same number of TRs as
> every other task in the deconvolve?
Are you talking about the number of TR's that are devoted for modeling the baseline and drifting effect? There is no standard for this, I guess, but it would be nice if you can manage to allocate at least 20% of your total TR's for that.
Gang
