As the overly-verbose title says, I'm wondering if someone can confirm for me the column order in the x1D file if one uses a convolution with multiple basis functions and stim_times_IM.

3dDeconvolve -input ${FUNC} -mask ${MASK}
-num_stimts 1 \
-stim_times_IM 1 times.1D 'SPMG2(18)' -stim_label 1 Task \
...

For a simple example, say I have a stim_times_IM file that has 3 onsets, and I use the SPMG function. I expect to get a total of 6 regressors, e.g.,

# ColumnLabels = "Run#1Pol#0 ; Run#1Pol#1 ; Run#1Pol#2 ; Task#0 ; Task#1 ; Task#2 ; Task#3 ; Task#4 ; Task#5

Should I assume that Task#0 is the "raw" basis and Task#1 is the temporal derivative for the first onset?

Thanks for your help.

-John