Hi Jen,
> 1) Is TENT a reasonable choice for this design?
It's a good choice if you want to increase the detection power especially when there are subtle HDR shape differences across condition, brain regions, subjects, and groups.
> 2) What parameters would make sense to use here?
By parameters do you mean the ones in TENT(b,c,n)? With b=0, you may choose an integer n so that n*TR covers at least 12 seconds.
> 3) How do I extract betas (for group analyses) using this function? If I understand TENT
> correctly, there will be a beta produced for each chunk of time in the HRF specified. If I
> want an "overall beta" (i.e., an estimate of the amplitude), is the only way to get this by
> asking for it using -iresp?
For group analysis, you may read the discussion in the following thread:
[
afni.nimh.nih.gov]
Gang
