I have an experiment with multiple scan runs, which are automatically concatenated in 3dDeconvolve, in the usual way. Now I have generated baseline+fit time series using 3dSynthesize. I would like to use the AFNI graph viewer to see the raw timeseries with the "ideal" overlaid, so I can check how the fit looks.

Is there a way to have the afni viewer automatically concatenate multiple EPIs as underlay so I can see the full timeseries graph? Or do I have to use 3dTcat to make a whole new huge dataset if I want to see that?

Alternately, is there a way to look at one scan run at a time as the underlay, but tell it to start the "ideal" dataset at the right place to match that run?

Or even more alternately, I'm open to suggestions as to how other people use the available functionality to efficiently review the fit of their GLMs. I don't need to be doing it exactly this way, it's just the first thing that occurred to me.

Thanks all!
-dave