Hi Rick,
I half suspected that it ran into some upper limit.
Hm, let's see. The beta values for that stimulus range from -1.15 to 0.28, which does strike me as a bit odd (the negative value), but it's the same for all four stimuli, and by design there is an ambiguity about baseline, because I don't have very many timepoint were none of the stimuli is active.
The matrix condition value 3dDeconvolve spits out is 12.4691, the inverse average error is 3.2e-14.
What's the R-matrix?
Cheers,
Kai