Hi,

Thank you for your help. I am using a TENT (0,14,8) function, and I do have a run with only one stimulus in a class at 374 seconds (each stimulus type is 4.25s long), and each run lasts 440s. Is this the situations you are referring to?

If so, with respect to your suggestion, is it correct that the stim_base option is incompatible with the stim_times option? Maybe I do not quite understand the theory behind your suggestion - how do I togethe use the -stim_base option and the BLOCK function while specifying the time point for that stimulus?

Maybe it will help for me to post my script...

And sorry it has taken me so long to respond. I was very lucky and got to take a week vacation.

Thanks again.

3dDeconvolve \
-input scaled_allruns+orig \
-mask mask_retrievalruns+orig \
-polort 3 \
-concat '1D: 0 222 444' \
-CENSORTR *:0-5 \
-nfirst 5 \
-num_stimts 9 \
-stim_times 1 stim/stim_times.01.1D 'TENT(0, 14, 8)' \
-stim_label 1 RFACE \
-stim_times 2 stim/stim_times.02.1D 'TENT(0, 14, 8)' \
-stim_label 2 RSCR \
-stim_times 3 stim/stim_times.03.1D 'TENT(0, 14, 8)' \
-stim_label 3 RNEW \
-stim_times 4 stim/stim_times.04.1D 'TENT(0, 14, 8)' \
-stim_label 4 KFACE \
-stim_times 5 stim/stim_times.05.1D 'TENT(0, 14, 8)' \
-stim_label 5 KSCR \
-stim_times 6 stim/stim_times.06.1D 'TENT(0, 14, 8)' \
-stim_label 6 KNEW \
-stim_times 7 stim/stim_times.07.1D 'TENT(0, 14, 8)' \
-stim_label 7 NFACE \
-stim_times 8 stim/stim_times.08.1D 'TENT(0, 14, 8)' \
-stim_label 8 NSCR \
-stim_times 9 stim/stim_times.09.1D 'TENT(0, 14, 8)' \
-stim_label 9 NNEW \
-iresp 1 irf_RFACE.irf -iresp 2 irf_RSCR.irf \
-iresp 3 irf_RNEW.irf -iresp 4 irf_KFACE.irf \
-iresp 5 irf_KSCR.irf -iresp 6 irf_KNEW.irf \
-iresp 7 irf_NFACE.irf -iresp 8 irf_NSCR.irf \
-iresp 9 irf_NNEW.irf \
-gltsym glt/glt1.txt -glt_label 1 RvK \
-gltsym glt/glt2.txt -glt_label 2 OvN \
-fitts full_model.fit \
-errts residual_error.fit \
-fout -tout -rout \
-x1D Xmat.x1D \
-bucket ret_decon_results