Hello,

I'd like to examine change over time (weeks) in activation by a particular two-run task, within an individual subject (i.e. get a map of that person's contrast-elicited activation at T2 minus contrast-elicited activation at Time1).

What I'd like to do is essentially what was recommended in this ancient post:

[afni.nimh.nih.gov]

However, I'm wondering what the syntax would be. I want to AVOID having to actually spatially align and concatenate my two time series into one long one, and change all the elapsed times of the task stimuli/events of the T2 scan by adding the total duration (s) of the first scan's time series etc.

Is there a way to specify that 3dDeconvolve invoke one time-series EPIRT dataset as session 2, and a different time-series EPIRT dataset as session 1 and contrast them somehow, to yield a bucket dataset? What would the model specifier be to denote within-subject analysis?

I see no exemplar for this in the -help or in the 3dDeconvolve pdf manual.

Thanks

Jim