Posted by Edward J. Butterworth on November 08, 2002 at 10:41:12:
I have recently begun using motion parameters generated with 3dvolreg as baseline regressors in a 3dDeconvolve script, and the results are not good. I generally get good results with 3dDeconvolve, but including the motion regressors seems to wipe out almost all of the activation--I end up with a random pattern of dots in and out of the brain region. Am I setting up the deconvolution routine incorrectly?
Here's the script:
3dDeconvolve -input n38r1.vo+orig \
-nfirst 3 -nlast 92 -polort 2 -xout -fdisp 30 \
-num_stimts 7 \
-stim_file 1 ../../t93_1111.1D \
-stim_label 1 n38r1.stim \
-stim_minlag 1 1 -stim_maxlag 1 3 \
-stim_file 2 'n38r1.dope.1D[1]' \
-stim_base 2 -stim_label 2 Roll \
-stim_minlag 2 1 -stim_maxlag 2 3 \
-stim_file 3 'n38r1.dope.1D[2]' \
-stim_base 3 -stim_label 3 Pitch \
-stim_minlag 3 1 -stim_maxlag 3 3 \
-stim_file 4 'n38r1.dope.1D[3]' \
-stim_base 4 -stim_label 4 Yaw \
-stim_minlag 4 1 -stim_maxlag 4 3 \
-stim_file 5 'n38r1.dope.1D[4]' \
-stim_base 5 -stim_label 5 dS \
-stim_minlag 5 1 -stim_maxlag 5 3 \
-stim_file 6 'n38r1.dope.1D[5]' \
-stim_base 6 -stim_label 6 dL \
-stim_minlag 6 1 -stim_maxlag 6 3 \
-stim_file 7 'n38r1.dope.1D[6]' \
-stim_base 7 -stim_label 7 dP \
-stim_minlag 7 1 -stim_maxlag 7 3 \
-fitts n38r1.2fX \
-fout -rout -tout -full_first \
-bucket n38r1.2sX